08/21/2026
Have you done the new hiking trail yet ?? ππ€·πΌββοΈ
High on a mountainside near Fernie, British Columbia, sits one of the strangest fossils in North America. It was found in July 1947, when a field crew mapping coal outcrops for the BC Geological Survey stumbled across something enormous embedded in the rock. A student on the team described it simply as a fossil truck tire. Geologists soon realized it was something far older.
The fossil is a giant ammonite, a coiled marine cephalopod related to today's squid, octopuses, and nautiluses. It measures roughly 1.4 metres across and dates back approximately 150 million years, to the late Jurassic period, when a shallow sea covered much of what is now western Canada. Long before the Rocky Mountains existed, this creature lived, hunted, and died in that ancient ocean, and its shell settled into sediment that would eventually be compressed into stone and lifted thousands of feet into the air by tectonic forces.
For decades, the fossil was known by the name Titanites occidentalis, classified alongside similar giant ammonites found in Dorset, England. But a closer study of its ribbing patterns and growth stages, aided by the discovery of additional specimens nearby, revealed that it did not actually belong to that group. Scientists reassigned it to a newly established genus, and it is now formally known as Corbinites occidentalis.
It remains the largest ammonite fossil ever found in Canada. Reaching it requires a steep, multi hour hike off the beaten path outside Fernie, but for those who make the climb, the reward is standing beside a creature that swam through seas that vanished tens of millions of years before humans existed.