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| Name | Dr. Corwin Sullivan: A Monstersaurian Lizard in a Warm Subarctic Alberta During the Late Cretaceous |
| Video Uploader | Video From Philip J. Currie Dinosaur Museum |
| Upload Date | This Video Uploaded At 26-04-2024 03:25:49 |
| Video Discription | Ongoing fieldwork at a site called the DC Bonebed, on the Wapiti River, is recovering fossil evidence of the rich community of dinosaurs and other creatures that lived in northwestern Alberta about 75 million years ago. One small but significant specimen is a skull bone from a lizard belonging to a group called the Monstersauria, represented today by the Gila monster of the southwestern United States and the beaded lizards of Mexico and Guatemala. The skull bone reveals that the "DC Monster" resembled its modern cousins in having knobs of bone, called osteoderms, fused to the skull for protection. The DC Monster was even more similar to a Late Cretaceous monstersaur from Montana, probably representing the same species. In the modern world, monstersaurs and most other large lizards are restricted to fairly low latitudes, but in the Late Cretaceous the DC Bonebed would have been just outside the Arctic Circle, at a latitude of about 63° N. The presence of the DC Monster at such a high latitude, along with gingko trees, crocodilians, and soft-shelled turtles, is consistent with other evidence showing that the Late Cretaceous world was much warmer than today's. |
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