Thursday, 31 March 2016

Wednesday, 30 March 2016

Tuesday, 29 March 2016

MCABEE: SOLVING MYSTERIES IN THE EOCENE

Plant fossils from the Okanagan highlands, an area centred in the Interior of British Columbia, provide important clues to an ancient climate.

While the area is referred to as the Okanagan, the term is used in a slightly misleading fashion to describe an arc of Eocene lakebed sites that extend from Smithers in the north, down to the fossil site of Republic Washington, in the south.

The grouping includes the fossil sites of Driftwood Canyon, Quilchena, Allenby, Tranquille, McAbee, Princeton and Republic.

These fossil sites range in time from Early to Middle Eocene, and the fossil they contain give us a snapshot of what was happening in this part of the world because of the varied plant fossils they contain.

While the area around the Interior of British Columbia was affected, McAbee, near the town of Cache Creek, was not as warm as some of the other Middle Eocene sites, a fact inferred by what we see and what is conspicuously missing.

In looking at the plant species, it has been suggested that the area of McAbee had a more temperate climate, slightly cooler and wetter than other Eocene sites to the south at Princeton, British Columbia and Republic and Chuckanut, Washington.

We see ginko, a variety of insects and fish remains, the rare feather and a boatload of deciduous evidence. Missing are the tropical Sabal (palm), seen at Princeton and the impressive Ensete (banana) and Zamiaceae (cycad) found at Republic and Chuckanut, Washington.

Monday, 28 March 2016

Wednesday, 23 March 2016

DRAGONFLIES: ANCIENT PREDATORS

Dragonflies, from the order Odonata, have been around for over 250 million years. The most conspicuous difference in their evolution over time is the steady shrinking of their wingspan from well over two and a half feet down to a few inches.

Voracious predators, today they dine on bees, wasps, butterflies and avoid the attentions of birds and wee lizards --  but back in the day, they had a much larger selection of meals within their grasp. Time has turned the tables. Small lizards and birds who today choose dragonflies as a tasty snack used to be their preferred prey. 

GORDES: CITY OF LIMESTONE & LIGHT

Monday, 21 March 2016

Wednesday, 16 March 2016

Sunday, 13 March 2016

PALTECHIOCERAS OF WRANGELLIA

Those working in the Jurassic exposures on Vancouver Island are a determined crew. Most of the sedimentary deposits of the Jurassic are exposed in the hard to reach areas between Nootka Sound and Cape Scott.

By the time these ammonites were being buried in sediment, Wrangellia, the predominately volcanic terrane that now forms Vancouver Island and the Queen Charlotte Islands, had made its way to the northern mid-laditudes.

This detail of the Jurassic ammonite, Paltechioceras sp. shot with an ultra-low f-stop, is from an all but inaccessible site in Sayward, Bonanza Group, Vancouver Island.

We did a fossil field trip up there a few years ago with the Courtenay & Qualicum beach crew. The drive up the mountain was thrilling as the road narrowed until it was barely the width of our wheel base. Thrilling to say the least.

HOMAGE TO SPRING

Friday, 19 February 2016

Tuesday, 16 February 2016

Tuesday, 2 February 2016

Saturday, 23 January 2016

LINCOLN CREEK FORMATION: EOCENE-OLIGOCENE BORDER

Fossil crabs, several dozen species of mulluscs including the elusive tusk shell have been found in the fossil exposures of the Lincoln Creek Formation, southern Olympic Peninsula, near the town of Porter, Washington, 46°56'20"N, 123°18'38"W.

It is a site I return to each year to see the erosion and what new specimens have worked their way to the surface.

The whitish strata consists of tuffaceous siltstone and sandstone with concretionary beds throughout. They are slightly older than originally thought, coming in around 37 million-years, straddling the Eocene-Oligocene border. Here a lovely crab, Pulalius vulgaris, sits in the sand. He would be in good company at the site amongst the more common scaphodpod shells and other wee gastropods.

The whitish aragonitic shells of scaphopods are conical and curved with a planispiral curve, looking a bit like an elephant's tusk, hence their common name. They prefer to live on soft substrates in subtidal zones so they are not as abundant or readily visible on our beaches as their gastropods and bivalves compatriots. Tusk shells and their fossil relatives, however, are found commonly in the sediments at Porter and other localities throughout the Pacific Northwest while crabs are found, but more rare.

Thursday, 31 December 2015

TUSKS AND BONE: TANGIERS


During the Miocene and Pliocene, 12-1.6 million years ago, a diverse group of extinct proboscideans, elephant-like animals walked the Earth.

Most of these large beasts had four tusks and likely a trunk similar to modern elephants. They were creatures of legend, inspiring myths and stories of fanciful creatures to the first humans to encounter them.

Beyond our neanderthal friends, one such fellow was Quintus Sertorius, a Roman statesman come general, who grew up in Umbria. Born into a world at war just two years before the Romans sacked Corinth to bring Greece under Roman rule, Quintus lived much of his life as a military man far from his native Norcia. Around 81 BC, he travelled to Morocco, the land of opium, massive trilobites and the birthplace of Antaeus, the legendary North African ogre who was killed by the Greek hero Heracles.

The locals tell a tale that Quintus requested proof of Antaeus, hard evidence he could bring back to Rome to support their tales so they took him to a mound at Tingis, Morocco, where they unearthed the bones of a Neogene elephant, Tetralophodon.

Tetralophodon bones are large and skeletons singularly impressive. Impressive enough to be taken for something else entirely. By all accounts these proboscidean remains were that of the mythical ogre Antaeus and were thus reported back to Rome as such. It was hundreds of years later before their true heritage was known.

Monday, 21 December 2015

Saturday, 19 December 2015

Friday, 20 November 2015

Tuesday, 10 November 2015

Wednesday, 4 November 2015

Thursday, 15 October 2015

TYLOSTOME TUMIDUM

This lovely big fellow is Tylostoma tumidum, an epifaunal grazing Lower Cretaceous Gastropod from the Goodland Formation near Fort Worth, Texas, USA. (171.6 to 58.7 Ma)

Thursday, 8 October 2015

PALM TRUNK MOULD

George Mustoe of the Burke Museum preparing to make a mould of a palm trunk that once gew in the wetlands that bordered an ancient river.

Sunday, 20 September 2015

ERBENOCHILE ERBENI

A spectacular specimen of the trilobite Erbenochile erbeni. This impressive fossil arthropod shows unusual schizochroal eyes characteristic of the genus.

Family Odontopleuridae, Odontopleurid trilobite from the Lower Devonian, Emsian, 408 to 393 MYA, Bou Tiskaouine Formation, Hamar l”Aghdad Limestones, Taharajat, Oufaten, Djebel Issoumour

Saturday, 22 August 2015

Sunday, 2 August 2015

Sunday, 26 July 2015

Thursday, 16 July 2015

ICHTHYOSAUR EVOLUTION

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 a premier aquatic predator by another marine reptilian group, the Plesiosauria, in the later Jurassic and Cretaceous periods.

Tuesday, 14 July 2015