“Dinosaurs of the Spatsizi Plateau” has its roots in mineral exploration during the 1970s, when the geologist Kenny Larsen found the bones of what would eventually be identified as Ferrisaurus sustutensis, British Columbia’s first unique dinosaur species along the Sustut River. Curator of palaeontology Dr. Victoria Arbour returned to this region in 2017 during her postdoctoral fellowship at the Royal Ontario Museum, finding examples of fossil plants and a turtle and learning more about the environment that Ferrisaurus lived in. Although this was a successful expedition, the lushly forested river valleys make the Sustut River a challenging area to search for dinosaur fossils—there aren’t enough rocks!
In 2013, curator of botany Dr. Ken Marr was collecting and documenting alpine plants in Spatsizi Plateau Wilderness Provincial Park when he came across an exciting discovery – a shiny, serrated tooth that can only have come from a tyrannosaurid dinosaur. The Spatsizi Plateau has many more rocks exposed at the surface because it is located above the treeline, increasing the odds that palaeontologists will find fossils in this area. In 2019, Dr. Arbour led an expedition to return to Spatsizi Plateau Wilderness Provincial Park to search for more fossils like this dinosaur tooth, joined by former palaeontology collections manager Jaclyn Richmond and colleague Dr. Thomas Cullen, then at the Field Museum. Field sites in the park can only be accessed by helicopter, so the team had to travel light.
After several days hiking around the first area of interest and finding only fossil plants (no dinosaurs), the team switched to a new site a few kilometres away. Within a few hours, we had found a handful of bones, including a big dinosaur rib. It was a great afternoon and the team was looking forward to collecting some exciting specimens, but nature had other plans—the next day it rained, and the day after that it snowed (in August!) for more than a day, putting an end to the expedition. We are excited about what we might find the next time we are able to return to the Spatsizi Plateau!
This exploratory field research will collect and document new dinosaur fossils, which may include new occurrences of species found elsewhere in North America or new species that are unique to BC. The dinosaurs found on the Spatsizi Plateau may be as young as 67 to 68 million years old, putting them within 1 to 2 million years of the asteroid impact that caused a catastrophic mass extinction and marked the end of the age of dinosaurs. Fossils from the Spatsizi Plateau can provide important information about dinosaur ecosystems and how they were changing prior to the mass extinction.
Fossils are protected in British Columbia under the Fossil Management Framework, and expeditions like “Dinosaurs of the Spatsizi Plateau” require permits from either BC Parks or the BC Fossil Management Office. We are grateful to BC Parks for supporting this work by granting a park use permit to Dr. Arbour.
