Thescelosaurus
| Thescelosaurus Temporal range: Upper Cretaceous
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| Thescelosaurus at the Burpee Museum of Natural History in Rockford, Illinois | |
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| Genus: | Thescelosaurus |
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Thescelosaurus was a medium-sized[1] plant-eating dinosaur. It lived in forests during the late Cretaceous period in North America, about 68 to 65 million years ago.
One complete specimen and eight incomplete Thescelosaurus skeletons, including skin impressions, are known. They have been found in Wyoming, Montana, and South Dakota in the USA, and in Alberta and Saskatchewan in Canada.
True Thescelosaurus remains are known definitely only from late Maastrichtian-age rocks, from Canada, Wyoming, Montana (Hell Creek), and Colorado (Laramie Formation), USA.
With the exception of birds, it was one of the last genera of dinosaurs. Its remains were found three meters from the boundary clay containing the iridium layer that marks the end of the Cretaceous.[2]
References
- ↑ 2.5 and 4.0 meters (8.2 to 13.1 ft) in length on average.
- ↑ Carpenter, Kenneth; Breithaupt, Brent H. (1986). "Latest Cretaceous occurrences of nodosaurid ankylosaurs (Dinosauria, Ornithischia) in Western North America and the gradual extinction of the dinosaurs". Journal of Vertebrate Paleontology. 6 (3): 251–257. doi:10.1080/02724634.1986.10011619.
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