"This is Thecelosaurus our next Cretaceous dinosaur." — George Boggs on Thecelosaurus

Thescelosaurus (name meaning "Wondrous Lizard") is a genus of relatively large hyspilophodont ornithopod dinosaur, related to Othnielia, that originated during the Late Cretaceous period in what is now North America.


Era & DiscoveryEdit

Thescelosaurus lived during the Late Cretaceous period from 7265 million years ago, living up until the extinction of the dinosaurs. Named after its discoverer William Parks, Thescelosaurus was first discovered in 1937, and it was one of the last of its family, living at the end of the age of the dinosaurs.

Physical AttributesEdit

Thescelosaurus was a small but relatively large dinosaur for its size, roughly around 6–13 feet (24 m) long and weighed at 45 kilograms. It had blunt, peg-like teeth, suited to chewing thick leaves and fleshy fruit. Like other hypsilophodonts it had a tail stiffened by bony tendons. Held straight behind it, its tail helped Thescelosaurus keep its balance.

Behavior & TraitsEdit

Like its relatives Dryosaurus, Othnielia, and Leaellynasaura, Thescelosaurus lived in large groups for protection. When the group was eating or drinking, one member of the herd was the look out for predators. These small animals also traveled with larger animals that could protect them, like Ankylosaurus, Torosaurus, and Triceratops.


Trivia Edit

  • The sound effects of Thescelosaurus are that of various bird sounds.
Community content is available under CC-BY-SA unless otherwise noted.