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| Titanites occidentalis, Fernie Ammonite |
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| Fernie, British Columbia, Canada |
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| Titanites occidentalis, Fernie Ammonite |
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| Fernie, British Columbia, Canada |
Among these marine reptiles, two groups stand out: ichthyosaurs and mosasaurs. Though they never coexisted, both ruled the oceans in their own time and in their own terrifying ways.
Ichthyosaurs: Dolphin-Like Reptiles of the Jurassic
Ichthyosaurs (meaning "fish lizards") were sleek, fast swimmers that first appeared around 250 million years ago during the Triassic.
Their streamlined bodies, long snouts, and large eyes gave them an appearance eerily similar to modern dolphins—though they weren’t mammals. This resemblance is a perfect example of convergent evolution, where unrelated animals develop similar traits to adapt to similar environments.
Some ichthyosaurs grew as long as a school bus, and their enormous eyes (some as large as dinner plates) suggest they were capable of deep-sea hunting. They fed on fish, squid, and other marine life, and some species likely gave birth to live young—a rare trait among reptiles.
They thrived for millions of years but began to decline in the mid-Cretaceous, eventually going extinct before the rise of mosasaurs.
Mosasaurs: Apex Predators of the Cretaceous Seas
Enter the mosasaurs, who rose to dominance after the ichthyosaurs were gone. Mosasaurs appeared around 98 million years ago and ruled the oceans until the mass extinction event 66 million years ago that also wiped out the dinosaurs.
These were true marine lizards, closely related to today’s monitor lizards and snakes. Picture a massive, crocodile-headed Komodo dragon with flippers and a shark-like tail—and you’ll have a good image of a mosasaur. Some species grew over 50 feet long, and their jaws were packed with conical, backward-curving teeth perfect for gripping slippery prey.
Mosasaurs were apex predators, eating anything they could catch—fish, turtles, birds, and even other mosasaurs. Their double-jointed jaws could open wide, allowing them to swallow large prey whole.
Who Would Win in a Fight?
While it’s fun to imagine a battle between an ichthyosaur and a mosasaur, it never could have happened—ichthyosaurs were long extinct by the time mosasaurs evolved. That said, mosasaurs were more heavily built and had powerful jaws, making them formidable hunters. Ichthyosaurs were faster and more agile, more suited to quick chases than brute force.
Legacy Beneath the Waves
Both ichthyosaurs and mosasaurs left behind rich fossil records, giving scientists insight into how reptiles adapted to life in the oceans. Their bones have been found on every continent, including Antarctica, reminding us that the ancient oceans were just as dynamic and dangerous as today’s wildest habitats.
Next time you watch a documentary about dinosaurs or visit a natural history museum, take a moment to appreciate the marine reptiles that once ruled the seas. After all, the land wasn't the only place where prehistoric giants thrived.
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| Unescoceratops koppelhusae, Julius Csotonyi |
The Royal Tyrrell Museum of Palaeontology, named in honour of Joseph Burr Tyrrell, is a palaeontology museum and research facility in Drumheller, Alberta, Canada.
This jaw is the holotype specimen of this small leptoceratopsid dinosaur. Only a handful of isolated fossils have been found from this species, including a jaw that is the holotype specimen now in collections at the Royal Tyrell.
The Royal Tyrrell Museum of Palaeontology, named in honour of Joseph Burr Tyrrell, is a palaeontology museum and research facility in Drumheller, Alberta, Canada.
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| Unescoceratops koppelhusae, RTMP Collections |
The Cleveland Museum of Natural History's Michael Ryan and David Evans of the Royal Ontario Museum in Toronto recently determined that the specimen was a new genus and species.
Unescoceratops is a genus of leptoceratopsid ceratopsian dinosaurs known from the Late Cretaceous (about 76.5-75 million years ago) of Alberta, Canada. Unescoceratops is thought to have been between one and two meters long and less than 91 kilograms. A plant-eater, its teeth were the roundest of all Leptocertopsids.
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| Dinosaur Provincial Park, Alberta, Canada |
In addition to its particularly beautiful scenery, Dinosaur Provincial Park – located at the heart of the province of Alberta's badlands – is unmatched in terms of the number and variety of high-quality specimens.
To date, they represent more than 44 species, 34 genera and 10 families of dinosaurs, dating back 75-77 million years. This provides us with remarkable insight into life millions of years ago.
The park contains exceptional riparian habitat features as well as badlands of outstanding aesthetic value.
The creamy honey, beige and rust coloured hills around the fossil locality are outstanding examples of major geological processes and fluvial erosion patterns in semi-arid steppes — think glorious!The genus is named to honour the UNESCO World Heritage Site designation for the locality where the specimen was found and from the Greek “ceratops,” which means 'horned face'.
Dr Michael Ryan explained that he meant to honour UNESCO's efforts to increase understanding of natural history sites around the world.
© Julius T. Csotonyi An illustration of Unescoceratops koppelhusae, a plant-eating dinosaur from the Late Cretaceous period that lived approximately 75 million years ago shared with his gracious permission.
ABOUT THE ARTIST
Dr. Julius Csotonyi is a Vancouver-based scientific illustrator and natural history fine artist. He is a featured paleoartist on Season One of BC's Fossil Bounty. Julius has a scientific background in ecology (MSc) and microbiology (PhD) which has taken him to study sensitive ecosystems, from sand dunes in the Rocky Mountain parks to hydrothermal vents at the bottom of the Pacific Ocean.
These experiences have fuelled his strong resolve to work toward preserving our Earth’s biota. Painting biological subjects is one means that he uses to both enhance public awareness of biological diversity and to motivate concern for its welfare.
He paints murals and panels that have appeared in numerous museums including the Smithsonian’s National Museum of Natural History, press release images for scientific publications, books, stamp sets — including the outstanding 2018 “Sharks of Canada” set for Canada Post — and coins for the Royal Canadian Mint. To view more of Julius Csotonyi's exquisite work visit: https://csotonyi.com/
This stream is for those who share an enduring passion for our world's hidden treasures, its wild places & want to uncover her beauty stone by stone. This is the story of the making of our Earth and the many wonderful creatures who have called it home.
Join in the exploration of the fascinating science of palaeontology — that lens that examines ancient animals, plants & ecosystems from wee single-celled organisms to big & mighty dinosaurs. Save the stream to your favourites to listen while you drive, head out fossil collecting or snuggle in for the night!
To listen now, visit: https://open.spotify.com/show/1hH1wpDFFIlYC9ZW5uTYVL
| Pat Trask with a Fossil Rib Bone. Photo: Rebecca Miller |
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| Pat Trask Wrapping the plaster casing |
Photo One: Rebecca Miller, Little Prints Photography — she is awesome!
Photo Two: James Wood prepped the material and Pat Trask labelled and oriented the bones.
Photo Three: Pat Trask perched atop scaffolding along the Trent River. And yes, he's attached to a safety line to secure him in case of fall.
Photo Four: A diagram of the juvenile elasmosaur. See the Excavation Moment via Video Link: https://youtu.be/r82EcEF7Pfc
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| Trent River, Vancouver Island, BC |
You’ll find it not in dusty museums but in the riverbeds, sandstone ledges, and shale cliffs of the Trent River, just south of Courtenay, British Columbia.
This is a place where geology meets adventure — and where fossil hunters walk through time.
This area has been collected and studied in large part due to the efforts of the Vancouver Island Paleontological Society (VIPS) and its members.
These keen and knowledgeable citizen scientists have had a huge impact on our understanding of fossils in the region.
The picture below taken on August 20, 2020, when we were all down on the Trent for the extraction of Baby E-a marine reptile found high up in the bank by Pat Trask.
The Courtenay Museum hosts regular fossil tours here, led by Pat Trask. On one of those field trips back in 2017, Pat was leading a trip with a family and one of the field trip participants picked up a marine reptile finger bone.
It was laying in the river having eroded out from a nearby cliff. She showed it to Pat and he immediately recognized it as being diagnostic — it definitely belonged to a marine reptile — possibly an elasmosaur — but what species and just where on the river it had eroded from were still a mystery. As more and more of these bits and pieces were discovered, a very tasty pattern was emerging. Somewhere here, embedded in stone and eroding out bit by bit was a mighty marine reptile.
The excavation was the culmination of a three-year paleontological puzzle of various folk finding bits and pieces of the specimen but ever elusive, had been unable to locate the source. Time and perseverance won the day and that August morning we were on hand to bring that baby, aptly named Baby-E, out of the site and off to be prepped.
In the photo are VIPS members, James Wood, Betty Franklin, Dan Bowen and Jay Hawley. Each of their personal contributions to the paleontology of the Comox Valley, Vancouver Island and the Pacific Northwest are immense.
A Journey Across Oceans and Ages
The rocks that make up the Trent River landscape weren’t born here. In fact, they began their journey over 85 million years ago, far south of the equator as part of a scattered chain of tropical islands.
These fragments, riding the massive Pacific Plate, drifted slowly across the ocean, eventually slamming into the western edge of the North American continent.
The Pacific Plate — the largest tectonic plate on Earth, covering over 103 million square kilometers — is a restless force. Fueled by volcanic activity at its spreading center, it continues to expand, pushing against the North American Plate and forcing the ocean floor beneath the continent in a process known as subduction. Over time, this relentless collision helped build the rugged mountains and rich geological complexity of British Columbia.
Among the remnants of those far-flung islands is the Insular Superterrane — a mash-up of crustal fragments welded onto the continent from the Late Cretaceous through the Eocene. This allochthonous (meaning "foreign") terrain is geologically distinct from the rest of the mainland. The rocks you walk on along the Trent River don’t match anything next door in Alberta or even down the road. They’re relics of a world long lost to time.
Fossils Beneath Your Feet
In the 1970s, pioneering geologists Jim Monger and Charlie Ross of the Geological Survey of Canada helped map the complex tectonic puzzle of the Comox Basin. Their work revealed that by 85 million years ago, the Insular Superterrane — and the rocks of the Trent River — had already collided with the mainland, forming part of what we now know as Vancouver Island.
Back then, this region was a lush, subtropical landscape. Fossilized leaves and wood found in the area show ancient relatives of oak, poplar, maple, ash — even figs and breadfruit — thrived here. These are the botanical echoes of the Late Cretaceous, preserved in the mudstones and sandstones along the riverbank.
As you follow the river upstream, you'll come to a striking boundary: the transition from the dark-grey marine shales of the Haslam Formation to the sandy, more terrestrial Comox Formation. This contact zone marks a shift from deep ocean to coastal plain, and both formations offer their own fossil treasures.
Ammonites, Turtles, and Dinosaurs — Oh My!
Head west from Trent River Falls and you’ll arrive at Ammonite Alley, where the shale of the Haslam Formation has yielded beautiful examples of Mesopuzosia and Kitchinites, coiled marine cephalopods that once swam in warm Cretaceous seas. This section represents the Polytychoceras vancouverense ammonite zone, a biostratigraphic marker dating back roughly 84 to 83 million years.
Further along, past slick algae-covered stones and twisting alder roots, the story shifts from ocean to land. Paleontologists have uncovered both marine and terrestrial fossil turtles here — including the rare helochelydrid Naomichelys speciosa, a stubby-limbed, tank-like land turtle that once lumbered through the Cretaceous underbrush.
Even more impressive is the discovery of hadrosauroid dinosaur vertebrae by awesome possum Mike Trask — the tailbone of a duck-billed herbivore that may have wandered the nearby floodplains. Nearby, in the fine-grained sediments of Idle Creek, fossilized leaves and logs still peek from the rock, offering tantalizing clues about the forest these creatures once called home.
And then there’s the ratfish — one of the most bizarre and enigmatic finds from the Trent. Fossils of Hydrolagus colliei, a modern-day chimaera species still living off the Pacific coast, have been found in the area. This particular specimen was a bruiser, larger than its modern kin and armed with disproportionately large eyes and unusual reproductive anatomy. As unappetizing to ancient predators as it is to us, this creature is a fascinating link between ancient and modern marine ecosystems.
Where the Ancient Meets the Present
The Trent River is just one piece of a larger fossil-rich puzzle that includes nearby rivers like the Puntledge, also known for its fossil finds — including marine turtles such as Desmatochelys, as detailed in a 1992 paper by paleontologist Elizabeth Nicholls.
The Puntledge is significant to the K'ómoks First Nation, who have lived in this region since Time Immemorial and know the river by many names from the Puntledge, Sahtloot, Sasitla, and Ieeksun.
Today, fossil hunters — amateur and professional alike — can follow the rivers through time, discovering clues to a vastly different world hidden in the layers beneath their boots.
Planning Your Adventure
If you're ready to explore the paleontological wonders of the Trent River, head about three kilometres south of Courtenay along Highway 19. Look for a safe pull-off just south of the Cumberland Interchange. A trail leads from the highway beneath the bridge, bringing you to the river’s north bank. From here, the journey unfolds — a mix of scrambling, creek-walking, and sharp-eyed searching that can reveal fossils untouched for millions of years.
To head out on a guided tour of the river, visit the Courtenay Museum website and book in with Pat Trask to take you there, share the river's paleontological history and how to find fossils.
Remember: fossil collection is regulated, so always check local rules and never remove fossils from protected sites. In British Columbia, fossils belong to the province. If you find a fossil, you become its steward, noting where you found it and keeping it safe. Sharing your fossil finds with local paleontological societies and museums helps us to know what has been found and let's you know if that find is significant. If it is a new species, it might even be named after you!
The Trent River reminds us that adventure doesn’t always mean scaling peaks or paddling rapids. Sometimes, it’s found in quiet moments along a riverside, where the moss is thick, the rocks are ancient, and time itself feels close enough to touch.
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| Ichthyosaurus communis |
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| Roy Chapman Andrews, AMNH 1928 Expedition to the Gobi Desert |
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| Ichthyosaurus somersetensis Credit: Dean R Lomax |
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| Stretching the legs on a Spring stroll |
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| Up for a Spring snack but still a bit sleepy |
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| Coroniceras sp. from Sayward, British Columbia |
By the time these ammonites were being buried in sediment, Wrangellia, the predominately volcanic terrane that now forms Vancouver Island and Haida Gwaii, had made its way to the northern mid-latitudes.
Within the basal part of the sequence, sedimentary beds are found interbedded with lapilli and crystal tuffs. Here you'll see maroon tuffaceous sandstone, orange-grey sandstone, granule sandstone and conglomerate. Within them we find ammonites nestled in with gastropods and pelecypods.
While the fossiliferous outcrop is quite small, the Bonanza group is much larger, estimated to be at least 1000 metres thick. The site is quite small and in an active logging area, so the window to collect is limited.
We have been to the site many times. One one of the past trips, the drive up the mountain was thrilling as there had just been heavy rains and the road was washed out and narrowed until it was barely the width of our wheelbase and very, very steep. Closer to the top it narrowed to be just shy of the width of the vehicle — thrilling, to say the least.
So scary that my passengers all got out as there was a high probability of going head-first over the edge. I was navigating by some handwritten field notes and a wee map on a paper napkin that should have read, "park at the bottom and hike up."Did we park at the bottom and hike up? No, we did not.
The torrential rains of the Pacific Northwest had been working their magic on the hillside and slowly washing out the road until it slowly became more of a trail.
At the base of the hillside all looked well. Giddy for the fossils to come, we ventured off with a truck full of enthusiasm. Within 15 minutes of steep elevation gain, we had a wonderful view of the valley below. We were halfway up the mountain before I realized the error of my ways. The road twisted and turned then slowly narrowed to the width of my tires. Too narrow to turn around, so the only way was up.
Graham Beard from Qualicum Beach was the fellow who showed me the site and drew the wee map for me. I cannot recall everyone on the trip, but Perry Poon was there — he shot a video of the drive up that he described as thrilling. I have never seen it but would like to one day — and so was Patricia Coutts with her lovely Doberman.
She and I had just done a trip up to Goldbridge where the cliff we were on had turned into a landslide into a ravine so she was feeling understandably cautious about the power of Mother Nature.
Picture the angle, the hood of my jeep riding high and hiding what remained of the road beneath and a lovely stick shift that made you roll backwards a wee bit with every move to put it into gear. So, without being able to see the very narrow path beneath, I had to just keep going.
Both Perry and Patricia helped with filling in the potholes so my tires would have something to grip.In the end, we found what we were looking for. Memekay yields a mix of ammonites, gastropods and bivalves.
Many of them are poorly preserved. It was a hell of a ride but well worth the effort as we found some great fossils and with them more information on the palaeontology and geology of Vancouver Island. Just look at the keel on this beauty.
I would share the site information but it is now covered over with debris and inaccessible. One day, this whole region will be developed and the site will be opened up again. Until then, we'll have to enjoy what has been unearthed.
Calymene blumenbachii, sometimes erroneously spelled blumenbachi, is a species of trilobite found in the limestone quarries of the Wren's Nest in Dudley, England.
Nicknamed the Dudley Bug or Dudley Locust by an 18th-century quarryman, it became a symbol of the town and featured on the Dudley County Borough Council coat-of-arms. Calymene blumenbachii is commonly found in Silurian rocks (422.5-427.5 million years ago) and is thought to have lived in the shallow waters of the Silurian, in low energy reefs.
This particular species of Calymene — a fairly common genus in the Ordovician-Silurian — is unique to the Wenlock series in England and comes from the Wenlock Limestone Formation in Much Wenlock and the Wren's Nest in Dudley.
These sites seem to yield trilobites more readily than any other areas on the Wenlock Edge, and the rock here is dark grey as opposed to yellowish or whitish as it appears on other parts of the Edge, just a few miles away, in Church Stretton and elsewhere suggesting local changes in the environment in which the rock was deposited.
As an aside, while I was in the UK last, I attended a conference in London's Natural History Museum and given a private tour of some of their collections. It was with immense pride that I saw Graham Beard's kind donation to the museum snug up near Darwin. It seems the museum catalogues donations alphabetically so the two collections were quite close to one another. Two great men with a shared love of paleontology across the ages!
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| Yorkshire Coast |
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| Fashion in Medieval Livonia (1521): Albrecht Dürer |
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| 16th Century Fashion / Ruff Collars and Finery |
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| Alum House, Photo: Joyce Dobson and Keith Bowers |
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| Alum House. Photo: Ann Wedgewood and Keith Bowers |
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| Stemec suntokum, Sooke Formation |
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| Magellanic Penguin Chick, Spheniscus magellanicus |
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| Sooke, British Columbia and Juan de Fuca Strait |
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| Sooke Formation Gastropods, Photo: John Fam |