CHELICERATA: EURYPTERIDS, SPIDERS AND HORSESHOE CRABS

Sanctacaris uncata

This lovely is Sanctacaris uncata — a wonderful example of Chelicerata.

We first see them emerge in our ancient oceans in the Middle Cambrian, some 508 million years ago, as the arthropod Sanctacaris uncata (Briggs & Collins, 1988) known from the Glossopleura Zone, Stephen Formation of Mount Stephen in the Burgess Shale, British Columbia, Canada. 

Sanctacaris is proof positive that chelicerates, although rare, were present in the Middle Cambrian sea. Even at this early stage of evolution, Sanctacaris had the number and type of head appendages found in modified form in the eurypterids and xiphosurids, the major Palaeozoic groups that succeeded it. Even more interesting is that Sanctacaris had all the characteristics of later chelicerates except chelicerae — placing this early arthropod in a primitive sister group of all other chelicerates.

An extinct marine creature half a billion years old may sound otherworldly, but you know some of their more well-known marine brethren — sea spiders, the sexy eurypterids, chasmataspidids and horseshoe crabs — and some of their terrestrial cousins — spiders, scorpions, harvestmen, mites and ticks. 

They are grouped together because, like all arthropods, they have a segmented body and segmented limbs and a thick chitinous cuticle called an exoskeleton. Add those characteristics to a body system with two body segments — a cephalothorax and an abdomen. 

Like all arthropods, chelicerates' bodies and appendages are covered with a tough cuticle made mainly of chitin and chemically hardened proteins. 

Since this cannot stretch, the animals must moult to grow. In other words, they grow new but still soft cuticles, then cast off the old one and wait for the new one to harden. 

Until the new cuticle hardens the animals are defenceless and almost immobilized.  This also helps to explain why you find so many cephalons or moulted head shields — or whatever else our good arthropod friends shed and regrow — in the field and far fewer body fossils of the whole animal.

Some chelicerate are predatory animals that patrol the warm waters near thermal vents. They can be found feeding upon other predators and fish. Although the group were originally solely predatory, they have diversified to use all sorts of feeding strategies: predation, parasitism, herbivory, scavenging and dining on bits of decaying organic matter. 

Although harvestmen can digest solid food it is more akin to a mashed pulp by the time they do. The guts of most modern chelicerates are too narrow to digest solid food, instead, they generally liquidize their chosen meal by grinding it with their chelicerae and pedipalps then flooding it with digestive enzymes. 

To conserve water, air-breathing chelicerates excrete waste as solids that are removed from their blood by Malpighian tubules, structures that also evolved independently in insects — another case of convergent evolution.

The evolutionary origins of chelicerates from the early arthropods have been debated for decades. And although there is considerable agreement about the relationships between most chelicerate sub-groups, the inclusion of the Pycnogonida in this taxon has recently been questioned and the exact position of scorpions is still controversial, though they were long considered the most primitive or basal of the arachnids. 

We still have much to explore to sort out their evolutionary origins and placement within the various lineages but we will get there with time.

Image One: Reconstruction of Sanctacaris uncata, a Cambrian Habeliidan arthropod (stem-Chelicerata: Habeliida). by Junnn11 @ni075; Image Two: Chelicerata by Fossil Huntress

Aria C, Caron JB (December 2017). "Mandibulate convergence in an armoured Cambrian stem chelicerate". BMC Evolutionary Biology. 17 (1): 261. doi:10.1186/s12862-017-1088-7. PMC 5738823. PMID 29262772.

Legg DA (December 2014). "Sanctacaris uncata: the oldest chelicerate (Arthropoda)". Die Naturwissenschaften. 101 (12): 1065–73. doi:10.1007/s00114-014-1245-4. PMID 25296691.

Briggs DE, Collins D (August 1988). "A Middle Cambrian chelicerate from Mount Stephen, British Columbia" (PDF). Palaeontology. 31 (3): 779–798. Archived from the original (PDF) on July 16, 2011. Retrieved April 4, 2010.

Briggs DE, Erwin DH, Collier FJ (1995). Fossils of the Burgess Shale. Washington: Smithsonian Institution Press. ISBN 1-56098-659-X. OCLC 231793738.

HORSESHOE CRABS: WINNING THE SLOW RACE OF TIME

Horseshoe crabs are marine and brackish water arthropods of the order Xiphosura — a slowly evolving, conservative taxa.

Much like (slow) Water Striders (Aquarius remigis), (relatively sluggish) Coelacanth (Latimeria chalumnae) and (the current winner on really slow evolution) Elephant Sharks (Callorhinchus milii), these fellows have a long history in the fossil record with very few anatomical changes. 

But slow change provides loads of great information. It makes our new friend, Yunnanolimulus luoingensis, an especially interesting and excellent reference point for how this group evolved. 

We can examine their genome today and make comparisons all the way back to the Middle Triassic (with this new find) and other specimens from further back in the Ordovician — 445 million years ago. 

These living fossils have survived all five mass extinction events. They are generalists who can live in shallow or deep water and will eat pretty much anything they can find on the seafloor.

The oldest horseshoe crab fossil, Lunataspis aurora, is found in outcrops in Manitoba, Canada. Charmingly, the name means crescent moon shield of the dawn. It was palaeontologist Dave Rudkin and team who chose that romantic name. Finding them as fossils is quite remarkable as their shells are made of protein which does not mineralized like typical fossils.

Even so, the evolution of their exoskeleton is well-documented by fossils, but appendage and soft-tissue preservation are extremely rare. 

A new study analyzes details of the appendage and soft-tissue preservation in Yunnanolimulus luoingensis, a Middle Triassic (ca. 244 million years old) horseshoe crab from Yunnan Province, SW China. The remarkable anatomical preservation includes the chelicerae, five pairs of walking appendages, opisthosomal appendages with book gills, muscles, and fine setae permits comparison with extant horseshoe crabs.

The close anatomical similarity between the Middle Triassic horseshoe crabs and their recent analogues documents anatomical conservatism for over 240 million years, suggesting persistence of lifestyle.

The occurrence of Carcinoscorpius-type claspers on the first and second walking legs in male individuals of Y. luoingensis tells us that simple chelate claspers in males are plesiomorphic for horseshoe crabs, and the bulbous claspers in Tachypleus and Limulus are derived.

As an aside, if you hadn't seen an elephant shark before and were shown a photo, you would likely say, "that's no freaking shark." You would be wrong, of course, but it would be a very clever observation.

Callorhinchus milii look nothing like our Great White friends and they are not true sharks at all. Rather, they are ghost sharks that belong to the subclass Holocephali (chimaera), a group lovingly known as ratfish. They diverged from the shark lineage about 400 million years ago.

If you have a moment, do a search for Callorhinchus milii. The odd-looking fellow with the ironic name, kallos, which means beautiful in Greek, sports black blotches on a pale silver elongate body. And their special feature? It is the fishy equivalent of business in the front, party in the back, with a dangling trunk-like projection at the tip of their snout and well-developed rectal glands near the tail.

As another small point of interest with regards to horseshoe crabs, John McAllister collected several of these while working on his MSc to see if they had microstructures similar to trilobites (they do) and whether their cuticles were likewise calcified. He found no real calcification in their cuticles, in fact, he had a rather frustrating time getting anything measurable to dissolve in acid in his hunt for trace elements. 

Likewise, when looking at oxygen isotopes (16/18) to get a handle on water salinity and temperature, his contacts at the University of Waterloo had tons of fun getting anything at all to analyze. It made for some interesting findings. Sadly, for a number of reasons, he abandoned the work, but you can read his very interesting thesis here: https://dr.library.brocku.ca/handle/10464/1959

Ref: Hu, Shixue & Zhang, Qiyue & Feldmann, Rodney & Benton, Michael & Schweitzer, Carrie & Huang, Jinyuan & Wen, Wen & Zhou, Changyong & Xie, Tao & Lü, Tao & Hong, Shuigen. (2017). Exceptional appendage and soft-tissue preservation in a Middle Triassic horseshoe crab from SW China. Scientific Reports. 7. 10.1038/s41598-017-13319-x.

CRUZIANA TRILOBITE AND ANCIENT FOSSIL TRACKWAYS

Trilobite and Sea Scorpion Fossil Trackways

This is a very interesting block with wee trace fossil trackways from our Mississippian seas some 359.2 million to 318.1 million years ago. 

It shows a nice combination of Cruziana fossil trilobite trackway and eurypterid (sea scorpion) or horseshoe crab trackway on the same matrix. 

When we use the term Cruziana, we are not referring to the trilobite species, but to the particular shape and form of the trackway. 

In this case, elongate, bilaterally symmetrical burrows preserved along the bedding plane with repeated striations that are mostly oblique to the long dimension. I like to picture a teeny, tiny painter or sculpture with a small putty knife making angled cuts along a line or a wave motion to create a small curved line. Very showy skate skiing is another good visual. Sadly, neither is the case. While a Cruziana trace fossil is most often associated with trilobites, it can be made by other arthropods. 

When we see trace fossils — preserved tracks or other signs of behaviour from our marine friends living on the seafloor — they are generally from their furrowing, resting, emerging, walking or striding. They provide a glimpse of how these ancient sea creatures moved about to make a living. 

Trilobite and Sea Scorpion Fossil Trackways

This busy 4 1/2" x 3 1/2" x 1 1/4" block hails from the Tar Springs Formation in Perry County, Indiana, USA, and is in the collections of the deeply awesome David Appleton.

The Tar Springs Formation is recognized on the surface from southwestern Orange County to the Ohio River and is known in the subsurface from central Martin County southwestward (Gray, 1970, 1986).

In Indiana, the Tar Springs Formation is primarily shale, but it also contains scattered thin beds of limestone and massive local lenses of sandstone that on outcrop are differentiated as the Tick Ridge Sandstone Member (Gray, 1986). The formation ranges in thickness from about 70 ft (21 m) to more than 150 ft (46 m) in central Posey County and in southwestern Gibson County (Droste and Keller, 1995). Commonly sandstone predominates in those areas where the Tar Springs is as much as 150 ft (46 m) thick (Droste and Keller, 1995).

TRILOBITES: DARLINGS OF THE FOSSIL RECORD

Trilobites are the darlings of most fossil collectors. These diverse beauties are an extinct group of marine arthropods that first appeared in the Early Cambrian. 

They left many beautifully preserved examples of their three-lobed exoskeletons in the fossil record.

Trilobites — in all their many wonderful forms — lived in our ancient oceans for more than 270 million years. The last of their lineage went extinct at the end of the Permian, 252 million years ago. 

EURYPTERIDS: ANCIENT MARINE ARTHROPODS

More commonly known as sea scorpions, the now-extinct eurypterids were arthropods that lived during the Paleozoic. 

We saw the first of their brethren during the Ordovician and the last of them during the End-Permian Mass Extinction Event. 

In between, they thrived and irradiated out to every niche within our ancient seas and many later forms survived and thrived in both brackish and freshwater. 

The group Arthropoda includes invertebrate animals with exoskeletons, segmented bodies, and paired joint appendages. Eurypterids had six sets of appendages. You can clearly see the segmented body on this cutie, which is one of the defining characteristics of arthropods. The first set was modified into pinchers which are used for feeding. The largest appendage visible in this fossil is a broad paddle that E. tetragonophthalmus used to swim.

This first eurypterid, Eurypterus remipes, was discovered in New York in 1818. It is an iconic fossil for this region and was chosen as the state's official fossil in 1984. An excellent choice as most of the productive eurypterid-bearing outcrops are within the state's boundaries. Most of the fossils we find from them, whether body fossils or trace fossils are from fossil sites in North America and Europe This is because the group lived primarily in the waters around and within the ancient supercontinent of Euramerica. 

Only a handful of eurypterid groups spread beyond the confines of Euramerica and a few genera, such as Adelophthalmus — the longest-lived of all known eurypterid genera — and the giant predatory Pterygotus, achieved a cosmopolitan distribution so we find their fossil remains worldwide today. 

Interestingly, the type species, Pterygotus anglicus, was first through to be the remains of a massive fish by Swiss naturalist Louis Agassiz who described it in 1839 — hence the poorly chosen name Pterygotus, which translates to winged fish. He did catch that embarrassing error five years later, but the name remains for all time.

PIRANIA: MIDDLE CAMBRIAN SPONGE

Pirania is an extinct genus of sea sponge from the Middle Cambrian Burgess Shale in the Canadian Rockies of British Columbia and the Ordovician Fezouata Formation of Morocco. 

We have sea sponges living in our oceans today. Sea Sponges are some of the simplest multicellular organisms alive. They do not have brains, digestive, circulatory or nervous systems and, once rooted, do not move. 

Sponge species are numerous and diverse. There are 8,550 living sponge species in the phylum Porifera, which is comprised of four distinct classes. 

Demospongiae is the most diverse, containing 76.2% of all living sponges. Desmospongiae form complex bodies with monoaxon or tetraxon spicules. They can live in both marine and freshwater.

Hexactinellida, the rare glass sponges; Calcarea which contains all the calcareous sponges; and, Homoscleromorpha, the rarest and simplest class with 117 species. Homoscleromorpha has only recently been recognized so perhaps we will find more examples as we explore the world's oceans.

They are very skilled at filtering water and can pass more than 20,000 times their volume through their systems in a single day. They greatly aid in the water quality of coral reef ecosystems, filtering bacteria along with the water they process. They also aid with carbon, nitrogen and phosphorus as they filter it through their bodies and put it back into the ecosystem via their excrement.

Pirania is named after Mount St. Piran, near the Bow River Valley, Banff National Park, Alberta, Canada. It was first described by Charles Doolittle Walcott in 1920 from 128 fossil specimens found within the Greater Phyllopod bed, the most famous fossil-bearing member of the 508 million-year-old Burgess Shale Fossil Lagerstätte in the Canadian Rockies of British Columbia. The type locality has exceptional preservation of soft-bodied animals from the Middle Cambrian.

ANCIENT MARINE REPTILES: ICHTHYOSAURS

During the early Triassic period, ichthyosaurs evolved from a group of unidentified land reptiles that returned to the sea. 

They were particularly abundant in the later Triassic and early Jurassic periods before being replaced as the premier aquatic predator by another marine reptilian group, the Plesiosauria, in the later Jurassic and Cretaceous periods.

They thrived during much of the Mesozoic era; based on fossil evidence, they first appeared around 250 million years ago and at least one species survived until about 90 million years ago into the Late Cretaceous.

While they resembled fish and dolphins, ichthyosaurs were large marine reptiles belonging to the order known as Ichthyosauria or Ichthyopterygia. In 2018, Benjamin Kear and his team were able to study ichthyosaur remains at the molecular level, Their findings suggest ichthyosaurs had skin and blubber quite similar to our modern dolphins.

While ichthyosaurs evolved from land-dwelling, lung-breathing reptiles, they returned to our ancient seas and evolved into the fish-shaped creatures we find in the fossil record today.

Their limbs fully transformed into flippers, sometimes containing a very large number of digits and phalanges. Their flippers tell us they were entirely aquatic as they were not well-designed for use on land. And it was their flippers that first gave us the clue that they gave birth to live young; a find later confirmed by fossil embryo and wee baby ichy finds.

J.A. JELETZKY (1915-1988): CONTRIBUTIONS TO PALAEONTOLOGY

Homage to Palaeontologist Jeletzky — many of us who have done palaeontological fieldwork or studies have huge respect for the work of Jurij Alexandrovich Jeletzky. 

Jeletzky — Jura to his family and Russian friends, and George to the international English-speaking geological community — was born in Pensa, Russia, on June 18, 1915, and died December 4, 1988. 

His father was a physician, Alexander Grigorievich Romanov, and his mother was Halina Nicolayevna (Romanova) Jeletzky.

During his high school years, which he finished in Saratov in 1932, he developed an active interest in Mesozoic stratigraphy and palaeontology while visiting the classical Upper Jurassic sections along the Volga River. 

You will undoubtedly recall that the Volga is that region that offers up the spectacular oil-in-water coloured ammonite specimens like Quenstedtoceras (Lamberticeras) lamberti, Eboraciceras, Peltoceras, Kosmoceras, Grossouvria, Proriceras, Cadoceras and Rursiceras — inspirational indeed. 

He graduated with honours from the Geological and Geophysical Faculty of the State University at Kyiv in 1938 and completed graduate studies in palaeontology and stratigraphy at the Institute of Geological Sciences of the Ukrainian Academy of Sciences, Kyiv, in 1941. His Candidate of Geological Sciences (equivalent to a PhD) thesis was devoted to the stratigraphy and belemnite fauna of the Boreal Upper Cretaceous of northern Eurasia. 

On June 22, 1941, the day Germany invaded the USSR, he married a physician, Tamara Fedorovna, the daughter of the distinguished professor F. P. Bohatirchuk and had four children together — Alex, Olga, Theodore, and Halina. 

Jurij was in Kyiv when the city fell to the German armies in September 1941, and he continued working there as a palaeontologist in the Institute of Geological Sciences of the Ukrainian Academy of Sciences, until, on the return of the Red Army in 1943, he moved his family west to Poland and Germany. He left Berlin and reached Bayreuth, Bavaria, crossing the narrow strip between the advancing lines of the Allied and Soviet armies.

Throughout those difficult years, in which he worked as a librarian and finally as a translator in the U .S.-occupied zone of Germany, Jurij managed to keep his family together and to save some of his personal belongings. In 1948, he moved to Canada, where he became a research scientist for the Geological Survey of Canada. He held that title until 1982 when he was awarded emeritus status.

Jurij’s first paper, published in 1938, dealt with Pleistocene gastropods, but the bulk of the nearly 150 papers published in his lifetime were devoted to Mesozoic palaeontology and stratigraphy, especially from western and northern Canada; Cretaceous stratigraphy and belemnite faunas of northern Eurasia; as well as palaeogeography and paleobiogeography.

He worked on Vancouver Island initially, producing geologic maps and structural and stratigraphic reports, and this work was followed up with studies of correlative strata in southern British Columbia. His second major area of study was the northern Yukon where he elucidated the stratigraphy, structure, and palaeontology of Mesozoic rocks. His outstanding contribution to the work of the Geological Survey of Canada was sustained research on the Cretaceous stratigraphy and fossils of Canada.

George was a prolific writer and made major contributions to palaeontology, particularly the study of Cretaceous ammonoids, the bivalve Buchia, and the Mesozoic coleoids, particularly belemnites on which he began his paleontological career. Indeed, George was engaged in the production of the volume on coleoids for the Treatise on Invertebrate Paleontology when he died. 

He was a great champion of the role that fossils play in biochronology and the development of the Phanerozoic time scale. George had broad interests that impacted many aspects of geology, including palaeogeography, tectonics, and eustacy.

In 1955, on completion of stratigraphic studies on Vancouver Island, Jurij began a long-range project in the Mackenzie District of northwestern Canada. He said he was searching “for the most nearly continuous and largely or entirely open-marine section of Upper Jurassic-Low er Cretaceous rocks.” 

He believed that such a section was badly needed to correlate and order sequentially what were then the scattered Early Cretaceous and Late Jurassic marine invertebrate faunas from western and Arctic Canada. His extensive field research, which began by canoe and on foot in the company of an Indigenous guide and a cook in inaccessible and unpopulated areas of the northern Yukon, was conducted between 1955 and 1975. Numerous publications and shelves of detailed field notebooks document the complete Upper Jurassic-Lower Cretaceous sequence for which he searched.

This project led to his studies on the systematics and biostratigraphy of the bivalve Buchia, used in the final synthesis of his ideas about the Jurassic/Cretaceous boundary (1984, Geological Survey of Canada Special Paper 27). That paper, he said, meant a lot to him: it summarized nearly a lifetime’s work on the Jurassic/Cretaceous boundary beds, and he intended for it to be his final word on the subject. 

In that work, as in most others related to boreal biostratigraphy, a thorough analysis of the subject was facilitated by his Russian background and his knowledge of several other Slavic languages, as well as German and French.

In the 1960s, Jurij became coordinator and principal author of the Coleoidea volume of the Treatise on Invertebrate Paleontology, after the editors had agreed that the usual compilation of the volume should be preceded by a thorough revision of morphology, taxonomy, and phylogeny. This implied the reappraisal of all principal morphologic features of the Belemnitida and included the study of all type collections available worldwide. 

Only an individual with Jurij’s determination and intellectual and working capacity could have faced such a staggering enterprise. He thus amassed an enormous amount of information and became the world’s leading authority on the subject. 

A number of papers were published, including his extensively documented work on the comparative morphology, phylogeny, and classification of the fossil Coleoidea (1966, University of Kansas Paleontological Contribution No. 7). Meanwhile, he tended to his official duties for the Survey with his habitual thoroughness. This work included the study of large collections made by other geologists, as well as provincial surveys and research by oil and mining companies, and resulted in a large number of papers and unpublished reports.

However, it slowed the preparation of the Treatise final manuscript. He could have shortened some parts and compiled others, but Jurij felt that as a conscientious scientist he could not agree to publish any results that he considered either wrong or substandard.

Thus, several papers remain unpublished, including a 331-page manuscript, finished in 1978, on early and middle Liassic Belemnite faunas of England in relation to coeval faunas of northern Eurasia.

Jurij was a Fellow of the Geological Society of America and of the Royal Society of Canada. He received the Willet G. Miller Medal of the Royal Society of Canada in 1969 for outstanding basic research in geology (palaeontology and stratigraphy), and the Elkanah Billings Medal of the Geological Association of Canada (1978) for his research on Canadian palaeontology. He was also honoured, together with Ralph Imlay of the U.S.

Geological Survey, with a Special Symposium on the Jurassic-Cretaceous biochronology and palaeogeography of North America, during the Third North American Paleontological Convention in Montreal in 1982 (see Westermann, G., ed., 1984, Geological Association of Canada Special Paper 27).

Jurij Jeletzky worked for many years to the limit of his physical endurance, although he realized the danger to his health. From 1984 until his death in 1988, suffering from cancer, he worked to the limit of his failing strength to publish an important monograph on ammonites of the boreal regions, and to finish the Coleoidea volume of the Treatise and a large synthesis on the Yukon area. 

At his death, the first paper (co-written with E. Kemper, Geological Survey of Canada Bulletin 377) was already published; Jurij was still correcting the last version of the Yukon manuscript, and the Treatise manuscript was 80 to 90 per cent complete. In the last week of his life, he forced himself to correct, in his hospital bed, the proof pages of a paper on the relation of the Neuburg Formation of Germany to the sub-boreal Volgian of the Russian platform, thus completing the circle that brought him to geology during his high school years. 

A true earth scientist, Jurij based all his interpretations and theoretical discussions on facts, and as a committed, responsible, and independent-minded researcher, he challenged any hypothesis, even the most popular one, if it did not fit his data. Thus, in 1962 (Royal Society of Canada Transactions, v. 56), he opposed the prevailing views on the Cordilleran geosyncline in relation to northern Yukon, and in 1984 (Geological Survey of Canada Special Paper 27), he rejected the existence of large-scale north-south movements of “ allochthonous terranes” in western North America and Alaska after the Middle Jurassic. 

Instead, he adhered to the expanding Earth hypothesis rather than to orthodox plate tectonics. He held that palaeontology was the only basis for practical geochronology (1956, American Association of Petroleum Geologists Bulletin, v. 40), discussed the abuse of quantification in palaeontology and biochronological correlation (1965, Journal of Paleontology, v. 39), and the overestimation of eustatic compared to vertical tectonic movements in controlling large-scale transgressions and regressions (1978, Geological Survey of Canada Paper 77-18), and he vindicated the value of molluscs with respect to foraminifers for age and depositional interpretation of Tertiary rocks in British Columbia (1973, Canadian Journal of Earth Sciences, v. 10). 

He also thought that his data from extensive collections of Late Jurassic-Early Cretaceous Buchia and Late Cretaceous Inoceramus were in conflict with the “punctuated equilibrium” hypothesis. Whenever he became involved in scientific controversy, it was based on his deep belief that a scientist’s duty is to express openly his doubts whenever his data are challenged. Thus, he was always ready to stand up for his beliefs without being pompous; on the contrary, he was a very modest man.

Jurij never refused to give advice, when asked, especially to a junior colleague, or to write a detailed review of a thesis or manuscript. Even in the last weeks of his life, he completed a review, knowing that time was short and precious. He was extremely loyal to his profession—his love—and to the institution for which he worked.

He loved life, every hour of it. In his private life, he was a kind and generous person, always ready to give help to a colleague or friend. He never showed the strains of a personal life full of hardships.

Jura (George) Jeletzky will be missed by all those who believe that personal freedom, independence of thought, respect for facts, and a straightforward attitude in upholding fundamental principles as the hallmarks of a valuable human and scientific life.

A.C. Riccardi, Museum de Ciencias Naturalas, Universidad Nactional de La Plata, Argentina wrote a wonderful memorial to Jeletzky as did Godfrey Nowland, Chief Paleontologist, Geological Survey of Canada. Much of what they shared is included here. 

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/BF4C5A14713639CE54B473408D4406E6/S0022336000019776a.pdf/div-class-title-j-a-jeletzky-1915-1988-div.pdf

SPINY HETEROMORPH AMMONITE: INDEX FOSSILS

Ammonites, like this gorgeous spiny heteromorph, were prolific breeders that evolved rapidly. If you could cast a fishing line into our ancient seas, it is likely that you would hook an ammonite, not a fish.

We find ammonite fossils, and plenty of them, in sedimentary rock from all over the world. In some cases, we find rock beds where we can see evidence of a new species that evolved, lived and died out in such a short time span that we can walk through time, following the course of evolution using ammonites as a window into the past. For this reason, they make excellent index fossils. 

An index fossil is a species that allows us to link a particular rock formation, layered in time with a particular species or genus found there. Generally, deeper is older, so we use the sedimentary layers of rock to match up to specific geologic time periods, rather like the way we use tree rings to date trees.

TRILOBITES: HIGHLY SUCCESSFUL ANCIENT ARTHROPODS

Trilobites are an extinct group of marine arthropods that first appeared in the Early Cambrian. They left many beautifully preserved examples of their three-lobed exoskeletons in the fossil record. Trilobites — in all their many wonderful forms — lived in our ancient oceans for more than 270 million years. The last of their lineage went extinct at the end of the Permian, 252 million years ago.  

THE CAMBRIAN EXPLOSION: AN EXPLOSION OF LIFE

TREASURES OF CANADA: TRENT RIVER PALAEONTOLOGY

Dan Bowen, Chair, VIPS, Trent River

The rocks that make up the Trent River on Vancouver Island were laid down south of the equator as small, tropical islands. They rode across the Pacific heading north and slightly east over the past 85 million years to where we find them today.

The Pacific Plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. And it is massive. At 103 million km2 (40 million sq mi), it is the largest tectonic plate and continues to grow fed by volcanic eruptions that piggyback onto its trailing edge.

This relentless expansion pushes the Pacific Plate into the North American Plate. The pressure subducts it beneath our continent where it then melts back into the earth. Plate tectonics are slow but powerful forces. 

The island chains that rode the plates across the Pacific smashed into our coastline and slowly built the province of British Columbia. And because each of those islands had a different origin, they create pockets of interesting and diverse geology.

It is these islands that make up the Insular Belt — a physio-geological region on the northwestern North American coast. It consists of three major island groups — and many smaller islands — that stretches from southern British Columbia up into Alaska and the Yukon. These bits of islands on the move arrived from the Late Cretaceous through the Eocene — and continues to this day.

The rocks that form the Insular Superterrane are allochthonous, meaning they are not related to the rest of the North American continent. The rocks we walk over along the Trent River are distinct from those we find throughout the rest of Vancouver Island, Haida Gwaii, the rest of the province of British Columbia and completely foreign to those we find next door in Alberta.

To discover what we do find on the Trent takes only a wee stroll, a bit of digging and time to put all the pieces of the puzzle together. The first geological forays to Vancouver Island were to look for coal deposits, the profitable remains of ancient forests that could be burned to the power industry.

Jim Monger and Charlie Ross of the Geological Survey of Canada both worked to further our knowledge of the complex geology of the Comox Basin. They were at the cutting edge of west coast geology in the 1970s. It was their work that helped tease out how and where the rocks we see along the Trent today were formed and made their way north.

We know from their work that by 85 million years ago, the Insular Superterrane had made its way to what is now British Columbia. 

The lands were forested much as they are now but by extinct genera and families. The fossil remains of trees similar to oak, poplar, maple and ash can be found along the Trent and Vancouver Island. We also see the lovely remains of flowering plants such as Cupanities crenularis, figs and breadfruit.

Heading up the river, you come to a delineation zone that clearly marks the contact between the dark grey marine shales and mudstones of the Haslam Formation where they meet the sandstones of the Comox Formation. Fossilized material is less abundant in the Comox sandstones but still contains some interesting specimens. Here you begin to see fossilized wood and identifiable fossil plant material.

Further upstream, there is a small tributary, Idle Creek, where you can find more of this terrestrial material in the sandy shales. As you walk up, you see identifiable fossil plants beneath your feet and jungle-like, overgrown moss-covered, snarly trees all around you.

Walking west from the Trent River Falls at the bottom, you pass the infamous Ammonite Alley, where you can find Mesopuzosia sp. and Kitchinites sp. of the Upper Cretaceous (Santonian), Haslam Formation. Minding the slippery green algae covering some of the river rocks, you can see the first of the Polytychoceras vancouverense zone.

Continuing west, you reach the first of two fossil turtle sites on the river — amazingly, one terrestrial and one marine. If you continue, you come to the Inland Island Highway.

The Trent River has yielded some very interesting marine specimens, and significant terrestrial finds. We have found a wonderful terrestrial helochelydrid turtle, Naomichelys speciosa, and the caudal vertebrae of a Hadrosauroid dinosaur. Walking down from the Hadrosaur site you come to the site of the fossil ratfish find — one of the ocean's oddest fish.

Ratfish, Hydrolagus Collie, are chimaera found in the north-eastern Pacific Ocean today. The fossil specimen from the Trent would be considered large by modern standards as it is a bruiser in comparison to his modern counterparts. 

This robust fellow had exceptionally large eyes and sex organs that dangled enticingly between them. You mock, but there are many ratfish who would differ. While inherently sexy by ratfish standards, this fellow was not particularly tasty to their ancient marine brethren (or humans today) — so not hugely sought after as a food source or prey.

A little further again from the ratfish site we reach the contact of the two Formations. The rocks here have travelled a long way to their current location. With them, we peel away the layers of the geologic history of both the Comox Valley and the province of British Columbia.

The Trent River is not far from the Puntledge, a river whose banks have also revealed many wonderful fossil specimens. The Puntledge is also the name used by the K'ómoks First Nation to describe themselves. They have lived here since time immemorial. Along with Puntledge, they refer to themselves as Sahtloot, Sasitla and Ieeksun.

References: Note on the occurrence of the marine turtle Desmatochelys (Reptilia: Chelonioidea) from the Upper Cretaceous of Vancouver Island Elizabeth L. Nicholls Canadian Journal of Earth Sciences (1992) 29 (2): 377–380. https://doi.org/10.1139/e92-033; References: Chimaeras - The Neglected Chondrichthyans". Elasmo-research.org. Retrieved 2017-07-01.

Directions: If you're keen to explore the area, park on the side of Highway 19 about three kilometres south of Courtenay and hike up to the Trent River. Begin to look for parking about three kilometres south of the Cumberland Interchange. There is a trail that leads from the highway down beneath the bridge which will bring you to the Trent River's north side.

FERRISAURUS SUSTUTENSIS: A NEW NON-AVIAN DINOSAUR IN BC

Say hello to Ferrisaurus sustutensis —  “A new leptoceratopsid dinosaur from Maastrichtian-aged deposits of the Sustut Basin, northern British Columbia, Canada."

You may recall Dr. Victoria Arbour, curator of palaeontology at the Royal BC Museum from her work on ankylosaurs & that interesting specimen from Hornby Island thought to be a pterosaur but further study revealed to be a saurodontid fish, an ambush predator with very sharp serrated teeth and elongate, torpedo-like body. Not a pterosaur but still a massively exciting find. Arbour was very gracious about the new interpretation, taking it in stride. She has since gone on to name this partial ornithischian dinosaur from Sustut Basin, as well as the ankylosaurs Zuul, Zaraapelta, Crichtonpelta, and Ziapelta. She's been a busy bee.

For this latest find, she’s partnered up & published her findings with David Evans from the Royal Ontario Museum in the peer-reviewed scientific journal PeerJ - the Journal of Life and Environmental Sciences last year. Their paper describes this partial dinosaur skeleton found amongst the inhospitable boreal forests and folded rock of the Canadian Cordillera near the Sustut Basin of northern British Columbia, Canada.

The first bones were collected by geologist Kenny F. Larsen who was surveying for uranium along the then in-construction BC Rail line along the Sustut River. The bones were later donated to Dalhousie University in Halifax, Nova Scotia then accessioned by the Royal British Columbia Museum in Victoria, BC. The skeleton includes parts of the pectoral girdles, left forelimb, left hindlimb, and right pes. Their rationale for a new species distinguished from other named leptoceratopsids is based on the proportions of the ulna and pedal phalanges.

This specimen was previously described in 2008 as an indeterminate small-bodied, bipedal neornithischian, possibly representing either a pachycephalosaur or a basal ornithopod similar to Thescelosaurus. With more material to work with, Arbour and Evans reinterpreted the remains as a leptoceratopsid ceratopsian, Ferrisaurus sustutensis, gen. et. sp. nov.

Figure 2: Preserved elements of RBCM P900

The news deserves some fanfare. While Alberta, our sister province to the east is practically littered with dinosaur remains, they are relatively rare in BC. This is the first unique non-avian dinosaur species reported from British Columbia.

It has been placed, within a reasonably resolved phylogenetic context, with Ferrisaurus recovered as more closely related to Leptoceratops than Montanoceratops. At 68.2–67.2 Ma in age, Ferrisaurus falls between, and slightly overlaps with, both Montanoceratops and Leptoceratops, and represents a western range extension for Laramidian leptoceratopsids. Leptoceratopsidae is an extinct family of neoceratopsian dinosaurs from Asia, North America and Europe. They resembled and were closely related to, other neoceratopsians, such as Protoceratopsidae and Ceratopsidae, but they are more primitive and generally smaller.

Figure 3: Pectoral Elements of Laramidian leptoceratopsids

Back in 2017, Arbour led an expedition to the Sustut River in Northern British Columbia to relocate the site where Ferrisaurus was originally discovered forty-six years earlier in 1971 along the BC Rail line near the intersection of Birdflat Creek and the Sustut River. The expedition was a huge success as the team found the remains of this new species of dinosaur and also recovered several species of fossil plants.

The fossil plant finds may not seem that exciting in comparison to a dinosaur but Cretaceous plants in BC are also relatively rare. Most of our best fossil plant sites are Eocene, the ancient lakebed sites at McAbee and Princeton — so a good 15 million or so years earlier.

During that expedition, the team recovered a fragment of a large Cretaceous terrestrial trionychoid turtle Basilemys from the family Nanhsiungchelyidae near the confluence of Birdflat Creek and the Sustut River. This largely North American turtle along with the plants will allow us to make correlations with terrestrial finds from other sites including those from the Nanaimo group, the inland island construction sites and the Trent River on Vancouver Island and Horseshoe Canyon in southwestern Alberta. Jordan Mallon and Donald Brinkman have done some good work on the Basilemys morrinensis from the Upper Cretaceous Horseshoe Canyon Formation. The Sustut Basin turtle and plant remains have been accessioned into the Royal BC Museum’s collections in Victoria.

It wasn't until last summer that Arbour was able to extract more of this dinosaur and not all of it as their field season was shortened by a cold snap that brought snow and ice, freezing the ground they were working in the high alpine. Arbour plans to continue her work searching for dinosaur fossils in the high alpine plateaus of northern British Columbia. A fresh grant this year from the Natural Sciences and Engineering Research Council of Canada (NSERC) will help pave the way for both her and some summer students to continue their fieldwork.

Reference: Arbour VM, Evans DC. 2019. A new leptoceratopsid dinosaur from Maastrichtian-aged deposits of the Sustut Basin, northern British Columbia, Canada. PeerJ 7:e7926 https://doi.org/10.7717/peerj.7926. Here's a link to the paper: https://peerj.com/articles/7926/

Figure 1: RBCM P900, the holotype of Ferrisaurus sustutensis, was collected along the BC Rail line near the intersection of Birdflat Creek and the Sustut River in 1971, in the Sustut Basin of northern British Columbia, Canada. Map modified from Evenchick et al. (2003).

Figure 2: Preserved elements of RBCM P900, holotype of Ferrisaurus sustutensis, in white (gray represents missing parts of incomplete bones). RBCM P900 includes a partial right coracoid, partial left scapular blade, complete left radius, partial left ulna, partial left tibia, fibula, and coossified astragalus and ?calcaneum, partial left metatarsals I-IV, and digits III (phalanges 2–4) and IV (phalanges 2–5) of the right pes.

Figure 3: Pectoral elements of RBCM P900, holotype of Ferrisaurus sustutensis, compared to other Laramidian leptoceratopsids. (A) Fragmentary right coracoid of RBCM P900 in lateral view, compared to (B) complete right scapulocoracoid of CMN 8889, Leptoceratops gracilis, lateral view centered on coracoid with scapula in oblique view. Fragmentary left scapular blade of RBCM P900 in (C) lateral and (D) medial view, compared to (E) left scapula of MOR 300, Cerasinops hodgskissi in medial view, and (F) left scapula of TCM 2003.1.9, Prenoceratops pieganensis in lateral view. Abbreviations: sp, sternal process.

PTEROSAURS OF HORNBY ISLAND

If you could travel through time and go back to observe our ancient skies, you would see massive pterosaurs — huge, winged flying reptiles of the extinct order Pterosauria — cruising along with you. They soared our skies during most of the Mesozoic — from the late Triassic to the end of the Cretaceous (228 to 66 million years ago). 

By the end of the Cretaceous, they had grown to giants and one of their brethren, Quetzalcoatlus, a member of the family Azhdarchidae, boasts being the largest known flying animal that ever lived. They were the earliest vertebrates known to have evolved powered flight. Their wings were formed by a membrane of skin, muscle, and other tissues stretching from the ankles to a dramatically lengthened fourth finger.

We divide their lineage into two major types: basal pterosaurs and pterodactyloids. Basal pterosaurs (also called 'non-pterodactyloid pterosaurs' or ‘rhamphorhynchoids’) were smaller animals with fully toothed jaws and long tails. Their wide wing membranes connected to their hind legs. This would have allowed them some manoeuvrability on the ground, but with an awkward sprawling posture. They were better climbers with flexible joint anatomy and strong claws. Basal pterosaurs preferred to dine on insects and small vertebrates.

Later pterosaurs (pterodactyloids) evolved many sizes, shapes, and lifestyles. Pterodactlyoids had narrower wings with free hind limbs, highly reduced tails, and long necks with large heads. On the ground, pterodactyloids walked better than their earlier counterparts, manoeuvring all four limbs smoothly with an upright posture. They walked standing plantigrade on the hind feet and folding the wing finger upward to walk on the three-fingered "hand." These later pterosaurs were more nimble. They could take off from the ground, run and wade and swim. Their jaws had horny beaks and some of these later groups lacked the teeth of earlier lineages. Some groups developed elaborate head crests that were likely used to attract mates' sexy-pterosaur style.

So can we or have we found pterosaurs on Hornby Island? The short answer is yes.

Collishaw Point, known locally as Boulder Point, Hornby Island

Hornby Island is a lovely lush, island in British Columbia's northern Gulf Islands. It was formed from sediments of the upper Nanaimo Group which are also widely exposed on adjacent Denman Island and the southern Gulf Islands.

Peter Mustard, a geologist from the Geologic Survey of Canada, did considerable work on the geology of the island. It has a total stratigraphic thickness of 1350 m of upper Nanaimo Group marine sandstone, conglomerate and shale. 

These are partially exposed in the Campanian to the lower Maastrichtian outcrops at Collishaw Point on the northwest side of Hornby Island. Four formations underlie the island from oldest to youngest, and from west to east: the Northumberland, Geoffrey, Spray and Gabriola.

During the upper Cretaceous, between ~90 to 65 Ma, sediments derived from the Coast Belt to the east and the Cascades to the southeast poured seaward to the west and northwest into what was the large ancestral Georgia Basin. This major forearc basin was situated between Vancouver Island and the mainland of British Columbia. The rocks you find here originated far to the south in Baja California and are the right age and type of sediment for a pterosaur find. But are we California dreaming?

Upper Cretaceous Nanaimo Group Fossil Concretion

Well, truth be told, we were with one of the potential pterosaur finds from Hornby. It wasn't just hopeful thinking that had the west coast in a paleo uproar many ago when Sharon Hubbard of the Vancouver Island Palaeontological Society found what looked very much like a pterosaur.

Right time period. Right location. And, we have found them here in the past.

Sandy McLachlan found the first definitive pterosaur, an azhdarchid, back in 2008.

But was Sharon's find a pterosaur?

Victoria Arbour, a Canadian evolutionary biologist and palaeontologist working as a Natural Sciences and Engineering Research Council of Canada postdoctoral fellow at the University of Toronto and Royal Ontario Museum, certainly thought so. 

While Arbour is an expert on ankylosaurs, our lumbering armoured dinosaurs friends, she has studied pterosaurs and participated in the naming of Gwawinapterus from Hornby Island. 

But here's the thing — bony material encased in stone and let to cement for millions of years can be tricky.

While this fossil find was initially described as a very late-surviving member of the pterosaur group Istiodactylidae, further examination cast doubt on the identification. Once more detail was revealed the remains were published as being those of a saurodontid fish, an ambush predator with very sharp serrated teeth and elongate, torpedo-like bodies that grew up to two meters. Not a pterosaur but still a massively exciting find. Arbour was very gracious at the renaming, taking it in stride. She has since gone on to name a partial ornithischian dinosaur from Sustut Basin, as well as the ankylosaurs Zuul, Zaraapelta, Crichtonpelta, and Ziapelta. But she may have another shot at a pterosaur.

Dan Bowen, Chair, VIPS. Photo: Deanna Steptoe Graham

In 2019, Dan Bowen, Chair of the Vancouver Island Palaeontological Society and a truly awesome possum, found some very interesting bones in concretion on Hornby. 

The concretion was nestled amongst the 72 million-year-old grey shales of the Northumberland Formation, Campanian to the lower Maastrichtian, part of the Cretaceous Nanaimo Group from Collishaw Point.

The site is known as Boulder Point to the locals and it has been a popular fossil destination for many years. It is the same site where Sharon made her find years earlier.

The concretion contains four articulated vertebrae that looked to be fish at first glance. Jay Hawley, a local fossil enthusiast was asked to prep the block to reveal more details. Once the matrix was largely removed the vertebrae inside were revealed to be bird bones, not fish and not another saurodontid as originally thought. Palaeontologist Victoria Arbour was called back in to put her keen lens on the discovery. 

You will appreciate that she took a good long look at the specimen and confirmed it to be a bird or a pterosaur. We still do not have confirmation on which it is as yet. The delicate bony material is very flattened with a very shallow u-shape on the bottom but will need additional study to confirm if the skies above California were once home to a great pterosaur who died, was fossilized then rode our tectonic plates to now call Hornby home. It is a great story and one that I am keen to follow.

References: To learn more about the azhdarchid remains found by Sandy McLachlan, check out the paper by Martin-Silverston et al. 2016.

DIPLOMOCERAS OF HORNBY / JA-DAI-AICH

Diplomoceras sp.

This gorgeous cream and brown big beast of a heteromorph, Diplomoceras (Diplomoceras) sp., (Hyatt, 1900) was found within the 72 million-year-old sediments of the upper Nanaimo Group on the northern Gulf Island of Hornby in southwestern British Columbia, Canada. 

The site is known as Boulder Point to the locals and it has been a popular fossil destination for many years. It is the home of the K'ómoks First Nation, who called the island Ja-dai-aich.

Many of the fossils found at this locality are discovered in concretions rolled smooth by time and tide. The concretions you find on the beach are generally round or oval in shape and are made up of hard, compacted sedimentary rock. 

If you are lucky, when you split these nodules you are rewarded with a fossil hidden within. That is not always the case but the rewards are worth the effort. 

These past few years, many new and wonderful specimens have been unearthed — particularly by members of the Vancouver Island Palaeontological Society. 

And so it was in the first warm days of early summer last year. Three members of the Vancouver Palaeontological Society excavated this 100 cm long fossil specimen over two days in June of 2020. The specimen was not in concretion but rather embedded in the hard sintered shale matrix beneath their feet. It was angled slightly downward towards the shoreline and locked within the rolling shale beds of the island. 

Diplomoceratidae (Spath, 1926) are often referred to as the paperclip ammonites. They are in the family of ammonites included in the order Ammonitida in the Class Cephalopoda and are found within marine offshore to shallow subtidal Cretaceous — 99.7 to 66.043 million-year-old — sediments worldwide. 

I was reading with interest this morning about a new find published by Muramiya and Shigeta in December 2020 of a new heteromorph ammonoid Sormaites teshioensis gen. et sp. nov. (Diplomoceratidae) described from the upper Turonian (Upper Cretaceous) in the Nakagawa area, Hokkaido, northern Japan. This lovely has a shell surface ornamented with simple, straight, sharp-tipped ribs throughout ontogeny, but infrequent flared ribs and constrictions occur on later whorls. Excluding its earliest whorls, its coiling and ornamentation are very similar to Scalarites mihoensis and Sc. densicostatus from the Turonian to Coniacian in Hokkaido and Sakhalin, suggesting that So. teshioensis was probably derived from one of these taxa in the Northwest Pacific during middle to late Turonian.

Much like the long-lived geoducks living in Puget Sound today, studies of Diplomoceras suggest that members of this family could live to be over 200 years old — a good 40-years longer than a geoduck but not nearly as long-lived as the extant bivalve Arctica islandica that reach 405 to 410 years in age. 

Along with this jaw-dropper of a heteromorph, the same group found an Actinosepia, gladius — internal hard body part found in many cephalopods of a Vampyropod. Vampyropods are members of the proposed group Vampyropoda — equivalent to the superorder Octopodiformes — which includes vampire squid and octopus.

The upper Nanaimo Group is a mix of marine sandstone, conglomerate and shale. These are partially exposed in the Campanian to the lower Maastrichtian outcrops at Collishaw Point on the northwest side of Hornby Island.

Along with fossil crabs, shark teeth, bivalves and occasional rare and exquisite saurodontid fish, an ambush predator with very sharp serrated teeth and elongate, torpedo-like body — we also find three heteromorph ammonite families are represented within the massive, dark-grey mudstones interlaminated and interbedded with siltstone and fine-grained sandstone of the upper Campanian (Upper Cretaceous) strata of the Northumberland Formation exposed here: Baculitidae, Diplomoceratidae and Nostoceratidae. 

A variety of species are distinguished within these families, of which only three taxa – Baculites occidentalis (Meek, 1862), Diplomoceras (Diplomoceras) cylindraceum (Defrance, 1816) and Nostoceras (Nostoceras) hornbyense (Whiteaves, 1895), have been studied and reported previously. 

Over the last decade, large new collections by many members of the Vancouver Island Palaeontological Society and palaeontologists working at the Geologic Survey of Canada, along with a renewed look at previous collections have provided new taxonomic and morphometric data for the Hornby Island ammonite fauna. This renewed lens has helped shape our understanding and revamp descriptions of heteromorph taxa. Eleven taxa are recognized, including the new species Exiteloceras (Exiteloceras) densicostatum sp. nov., Nostoceras (Didymoceras?) adrotans sp. nov. and Solenoceras exornatus sp. nov. 

A great variety of shape and form exist within each group. Morphometric analyses by Sandy McLachlan and Jim Haggart of over 700 specimens unveiled the considerable phenotypic plasticity of these ammonites. They exhibit an extraordinarily broad spectrum of variability in their ornamentation and shell dimensions. 

The presence of a vibrant amateur palaeontological community on Vancouver Island made the extent of their work possible. Graham Beard, Doug Carrick, Betty Franklin, Raymond Graham, Joe Haegert, Bob Hunt, Stevi Kittleson, Kurt Morrison and Jean Sibbald are thanked for their correspondence and generosity in contributing many of the exquisite specimens featured in that study. 

These generous individuals, along with many other members of the Vancouver Island Palaeontological Society (VIPS), Vancouver Paleontological Society (VanPS), and British Columbia Paleontological Alliance (BCPA), have contributed a great deal to our knowledge of the West Coast of Canada and her geologic and palaeontological correlations to the rest of the world; notably, Dan Bowen, Rick Ross, John Fam and Pat and Mike Trask, Naomi & Terry Thomas. Their diligence in the collection, preparation and documentation of macrofossils is a reflection of the passion they have for palaeontology and their will to help shape the narrative of Earth history.

Through their efforts, a large population sample of Nostoceras (Nostoceras) hornbyense was made available and provided an excellent case study of a member of the Nostoceratidae. It was through the well-documented collection and examination of a remarkable number of nearly complete, well-preserved specimens that a re-evaluation of diagnostic traits within the genus Nostoceras was made possible. 

The north-east Pacific Nostoceras (Nostoceras) hornbyense Zone and the global Nostoceras (Nostoceras) hyatti Assemblage Zone are regarded as correlative, reinforcing a late Campanian age for the Northumberland Formation. This builds on the earlier work of individuals like Alan McGugan and others. McGugan looked at the Upper Cretaceous (Campanian and Maastrichtian) Foraminifera from the Upper Lambert and Northumberland Formations, Gulf Islands, British Columbia, Canada.

The Maastrichtian Bolivina incrassata fauna (upper part of Upper Lambert Formation) of Hornby Island (northern Comox Basin) is now recognized in the southern Nanaimo Basin on Gabriola and Galiano Islands. The Maastrichtian planktonic index species Globotruncana contusa occurs in the Upper Northumberland Formation of Mayne Island and Globotruncana calcarata (uppermost Campanian) occurs| in the Upper Northumberland Formation of Mayne Island and also in the Upper Lambert Formation at Manning Point on the north shore of Hornby Island (Comox Basin).

Very abundant benthonic and planktonic foraminiferal assemblages from the Upper Campanian Lower Northumberland Formation of Mayne Island enable paleoecological interpretations to be made using the Fisher diversity index, triangular plots of Texturlariina/Rotaliina/Miliolina, calcareous/agglutinated ratios, planktonic/benthonic ratios, generic models, and associated microfossils and megafossils. 

Combined with local geology and stratigraphy a relatively shallow neritic depositional environment is proposed for the Northumberland Formation in agreement with Scott but not Sliter who proposed an Outer shelf/slope environment with depths of 300 m or more.

References & further reading: Sandy M. S. McLachlan & James W. Haggart (2018) Reassessment of the late Campanian (Late Cretaceous) heteromorph ammonite fauna from Hornby Island, British Columbia, with implications for the taxonomy of the Diplomoceratidae and Nostoceratidae, Journal of Systematic Palaeontology, 16:15, 1247-1299, DOI: 10.1080/14772019.2017.1381651

Crickmay, C. H., and Pocock, S. A. J. 1963. Cretaceous of Vancouver, British Columbia. American Association of Petroleum Geologists Bulletin, 47, pp. 1928-1942.

England, T.D.J. and R. N. Hiscott (1991): Upper Nanaimo Group and younger strata, outer Gulf Islands, southwestern British Columbia: in Current Research, Part E; Geological Survey of Canada, Paper 91-1E, p. 117-125.

McGugan, Alan. (2011). Upper Cretaceous (Campanian and Maestrichtian) Foraminifera from the Upper Lambert and Northumberland Formations, Gulf Islands, British Columbia, Canada. Canadian Journal of Earth Sciences. 16. 2263-2274. 10.1139/e79-211. 

Scott, James. (2021). Upper Cretaceous foraminifera of the Haslam, Qualicum, and Trent River formations, Vancouver Island, British Columbia /. 

Sliter, W. & Baker, RA. (1972). Cretaceous bathymetric distribution of benthic foraminifers. Journal of Foraminiferal Research - J FORAMIN RES. 2. 167-183. 10.2113/gsjfr.2.4.167. 

Spath L. F. 1926. A Monograph of the Ammonoidea of the Gault; Part VI. Palaeontographical Society London

Sullivan, Rory (4 November 2020). "Large squid-like creature that looked like a giant paperclip lived for 200 years — 68 million years ago". The Independent. Archived from the original on 4 November 2020.

Urquhart, N. & Williams, C.. (1966). Patterns in Balance of Nature. Biometrics. 22. 206. 10.2307/2528236. 

Yusuke Muramiya and Yasunari Shigeta "Sormaites, a New Heteromorph Ammonoid Genus from the Turonian (Upper Cretaceous) of Hokkaido, Japan," Paleontological Research 25(1), 11-18, (30 December 2020). https://doi.org/10.2517/2020PR016.

Photos: Vancouver Island Palaeontological Society, Courtenay, British Columbia, Naomi and Terry Thomas.

OH CANADA — CANADA'S PLANNED, FUNDED, HIDDEN & ONGOING GENOCIDE

Murdered & Missing Children Art by Roy Vickers

You may be seeing orange shirts and #215 & #everychildmatters in the news, especially today as it is Canada Day. 

You likely know about the Residential School System in Canada — and also the USA. You may have heard the stories of what went on there. 

Recently, the media has been flooded by the deaths and unmarked graves of children. We weep for them as a nation. 

And you likely feel sadness or outrage for these events that feel like they should be deep in the past — except they weren't. 

The 'Indian' Residential Schools were schools built and funded by the government of Canada and run by various religious groups between 1831 (most in western Canada opened around 1860-1870s) and into the 1990s — the last closed in 1997. 

The first school to open was the Mohawk Institute Residental School in 1828. They began to receive federal funding in 1831. The last school to close was Kivalliq Hall in Rankin Inlet, in what is now Nunavut, which closed in 1997; it became an IRSSA-recognized school in 2019 following a court ruling, which is why earlier accounts describe the last school closing in 1996.

Yes, recent history. The most important question is not when were these schools built — but why were these schools built? 

To answer that we need to think about Canada as a young nation. Canada was meant to be a conquered land under British rule. The 'savages' having served their purpose in the (arguably mutually beneficial) fur trade and providing 'true novelty' in exhibitions like the 1893 Chicago World Fair, now needed to set their (silly, primitive) traditional ways aside and get on with the business of being white — or at least, dressing 'normal', speaking English (or French), adopting Western civilization practices. All primitive 'religious' paraphernalia had been stolen by this point — coppers, masks, etc. — and the practice of potlatch forbidden by law. 

The goal by the 1870s was that the Indigenous adults living at that time would be the LAST of the 'savages' and their children would be "educated = assimilated" into Western society. The churches running the schools were completely empowered to "beat them into submission" so that the children would "assimilate or die." 

So, to the world in our outward-facing messaging and in our history books, Canada did this kind and generous thing of building and funding schools to give these precious young children a much-needed education. We did this because, we as Canadians, are good guys. 

All of this is hard to believe given Canada's global image. We are the quiet, polite folk with the funny accent. What is being described sounds more like the work of the Nazi's extermination pogroms during the Second World War. 

You will be surprised to learn, then, that the term "Final Solution" was coined by Indian Affairs Superintended Duncan Campbell back in 1910 as he articulated how he envisioned solving the "Indian Problem" in Canada.

        "It is readily acknowledged that Indian children lose their natural resistance to illness by habitating so closely in these schools and that they die at a much higher rate than in their villages. But this alone does not justify a change in the policy of this Department, which is geared towards the final solution of our Indian Program." 

That statement was written by Duncan C. Scott in April 1910, in his capacity as the Superintendent of Indian Affairs to General-Major D. McKay, British Columbia's Indian Agent (Department of Indian Affairs Archives, RG 10 series).

Indian Residential Schools operated in Canada from  1831-1996

Documents (letters, internal direction by government, church documents) will be produced that show that the schools were built to deliberately separate children from their parents so that their parents, aunties, uncles and grandparents, would be the last of the savages. 

Some children and parents did want their kids to go to school for an education. And some had schools close to home that they could have or would have attended but they could not. 

Under the Indian Act of Canada, every First Nation (Metis & Inuit still had to but not under this Act) child had to attend a residential school (built far from home and run by the church) by law. 

It was illegal for these same children to attend ANY other educational institution. Why would we care where they were educated? It would actually have been more economical to have them live at home and attend school.

If education was the goal, why have this written into law?

History books will need to be amended to correct the untruths, the systemic re-writing, editing and white-washing of history. It is my hope that they include exact copies of these documents and not a paraphrased interpretation. The original wording is chilling. When you do get the chance to read the original documentation, please do.

So, 150,000 or more 'Indians' — First Nation, Inuit and Metis — were forced to attend these residential schools, not to give them an education but to deliberately strip them of their culture. It wasn't lost as a by-product of attending, it was the sole reason for their attending. 

We may find that the number exceeds 150,000 as there are pretty good Census records from that time in Canada's history. Even so, 150,000 is every child they could get their hands on from the age of 4-16 living in our country. 

We used to paint a picture that children were lucky to attend and that their parents wanted them to attend. This, too, is a lie. It was illegal not to send your children. Children were beaten, tortured and raped. Beaten for speaking their native tongue. 

It was illegal to protest your children being taken. It was illegal to even seek legal advice regarding the matter. 

We feel sadness today for the few hundred unmarked graves we are finding. This mild 'there-there, that is tragic, lets put up a nice headstone, take a few silent minutes and enjoy a cup of tea... and move on' attitude by our government is not surprising. 

We're Canada. We're used to being the good guys. We wrote our history to be the good guys. 

But this was G.E.N.O.C.I.D.E. — organized, premeditated, structured and funded genocide in partnership between the church and the government of Canada. 

"Genocide —  the deliberate killing of a large number of people from a particular nation or ethnic group with the aim of destroying that nation or group."

Canada was dealing with "the Indian problem" back in the 1800s. Lands were set aside (very similar to how we treat animals in a zoo...) and groups of First Nations, Inuit and Metis were moved onto these 'reserves.' 

Now, if you want to wage a successful war, you either need to kill everyone outright (though spare a few as slaves) or inter-marry with the population. Given that the first forays by settlers were to trade, it was the latter strategy that was chosen — except it was too slow.

I have more direct quotes that I will dig out to share with you about our governments' views on "the Indian Problem" and the deliberate 'assimilate or die pogrom' as delivered through the Residential School System — think of it as Smallpox 2.0 (infected people and blankets were sent into communities to infect and kill).

We feel sad for the #215 and the hundreds of unmarked graves we are finding. I think the death toll exceeds 50,000. Not all of those graves will be unmarked. Some of those children are in local cemeteries, some were cremated in Indian Hospitals (where medical experimentation was done), some in unmarked graves, but I truly think we are just at the tip of the iceberg.

Realistically, it may be as high as 75,000. There are newspaper reports from way back in the day that speak to a 50% death rate at the schools. Yes, 50%.

That is just the number of dead and buried. What about abused and tortured? Raped and beaten? That number is at or near — or exceeds — 150,000.  

So, what happens now? There will be apologies. There will be an inquiry. Many people will buy and wear orange shirts as an act of solidarity — and I thank those who do. For a few weeks, it will saturate the news. 

Canada will try to sidestep their active participation and coordination of genocide. Canadian political groups may use this tragedy to help bolster their image for re-election. Good for them. I don't really care why they do the right thing just that they do the right thing.

"This was a sad part of our history (trying to put it in the past) for which we apologize (on behalf of folk long dead so what can we really do about it?) and move forward as a nation (with some parades and emotionally charged solidarity)...

But this doesn't go away with an apology and a kumbaya.

So, the Canadian government will continue to apologize again and again — AND try to slide the blame over to the church, particularly the Catholic Church as they operated about 70% of all of these assimilation centres and because they are perceived to be immune to the law, in many cases above the law, and incredibly well-funded — plus they are well-known bastards with a long history of being hated — the perfect pre-made scapegoat.

So, records will be slow to be produced. Records that support a narrative of this being 'all the churchs' fault" will likely be more readily found and produced than those which directly implicate our government. Some of the records found will be destroyed.

But the truth will come out. Survivor stories will be told. 

And it is not just the Catholic Church — though they are a particularly vicious organization with a very long history of abuse and paedophilia — exactly who you would NOT want to entrust with children. These are the same self-righteous charmers who brought us the Inquisition, an infamous history of torture and persecution that goes back to the 12th century. I am not a fan. 

I have Christian and Catholic friends whom I love. I love individuals but not institutions who do not hold themselves to account. Love them or hate them, these organizations will be thrown under the bus as they deserve.

Outrage will swell. This time, voices will not be silenced. Atrocities will be acknowledged albeit begrudgingly. Truth and Reconciliation will finally be heard. Land claims, forms of governance and governments will finally be resolved. 

If you read canadahistory.ca, you'll see "Western Canada's Treaties were intended to provide frameworks for respectful coexistence." 

In Canada, Treaties represent the source of First Nation's peoples' unique nation-to-nation relationship with the Crown. When I first read that 'the treaties were meant as a means of respectful coexistence,' I thought, 'that sounds about right.' Then I thought more of the histories. It sounds great, but it is not true.

I do not know if Canada is capable of honestly dealing with this shame, and guilt as a nation. 

Groups protect their own. I worry that those that do come across evidence may destroy it 'for the collective good.' Destruction of evidence is a very common practice. I think we need to acknowledge that we cannot be trusted as a nation to investigate this on our own. I would like the UN as a neutral third party to work with us as a nation as we uncover our historical truths.

What will not happen — though I would very much love it to — is for every church involved to have their church property revoked (not burned to the ground as is happening in our country), all of their records confiscated and made public (as appropriate) and all of the known abusers still working with them abusing the next generation of children, brought to justice. 

Every Canadian should read the Truth and Reconciliation Commission's Final Report. This should be taught in schools. Groups should be brought together to discuss this as a nation and work together to plan the next steps. 

Folk around the world should read it, too. Canada has a long history of missing and murdered women and children. The Murdered and Missing Indigenous Women and Girls Inquiry did good work and produced 231 Calls to Justice. 

These recent news stories will finally be the boot to the neck of Canada to acknowledge the hidden history of this planned, funded genocide by the government of Canada. These recently discovered remains will be the final pebble that creates an avalanche.

This is a powerful time in our history. This is our chance to do what is right — what is just. This is a chance to truly listen and take steps to collectively mend ourselves as a nation of nations. Sadness and outrage are natural responses to this truth. I hope you, too, feel a passionate desire for justice — for Truth & Reconciliation. 

Thank you to Roy Vickers for sharing this powerful image to help gain awareness and create dialogue for lasting change.