A groundbreaking discovery has been made by paleontologists in British Columbia, as sets of prehistoric three-toed footprints have led to the identification of a new dinosaur in the ankylosaurid family. These armored dinosaurs are known for their distinctive tail armor, with ankylosaurids possessing a bony tail club that sets them apart from their nodosaurid relatives.
The trackways were uncovered near Tumbler Ridge, a region famous for its ankylosaur fossils. The first trackway was discovered in 2000 by Mark Turner and Daniel Helm, two young boys whose finding sparked further exploration in the area. Ankylosaurids are characterized by having three toes on their back feet, unlike other dinosaurs in their family that have four toes.
Renowned ankylosaur specialist Victoria Arbour visited Tumbler Ridge in 2023 and was shown multiple three-toed footprint trackways by Charles Helm, a scientific advisor at the Tumbler Ridge Museum. These trackways, preserved in the Dunvegan and Kaskapau Formations from the middle Cretaceous period, provided valuable insight into the prehistoric life of the region.
Through detailed analysis and photogrammetry, the researchers identified a new species of dinosaur, named Ruopodosaurus clava. The footprints of this dinosaur reveal robust digits with blunt triangular or U-shaped toe tips on the back feet, while the front feet bear five distinctly crescentic digits.
Although the physical appearance of Ruopodosaurus remains a mystery, it is estimated to have been 5 to 6 meters long, spiky, armored, and potentially equipped with a stiff tail or tail club. The discovery of Ruopodosaurus trackways challenges previous assumptions about the presence of ankylosaurids in North America during the mid-Cretaceous period.
This groundbreaking research, published in the Journal of Vertebrate Paleontology, sheds light on the evolutionary history of dinosaurs in North America. The findings underscore the importance of the Peace Region in northeastern British Columbia for understanding prehistoric life and highlight the region as a hub for dinosaur research. The identification of Ruopodosaurus in this specific part of Canada adds to the diversity of ankylosaurids known to have inhabited the continent during the Cretaceous period.
