|1st Species||Tenontosaurus tilletti|
|2nd Species||Tenontosaurus dossi|
|Time Range||115-108 mya|
|Location||United States of America|
|Name Meaning||Sinew lizard|
|Physical Dimensions||7.7 meters long for T.tilletti|
|Weight||1 tonne for T.tilletti|
Tenontosaurus was a bipedal ornithopod with a semi-bulky body, long forelimbs, long, muscular hindlimbs, an extremely long, broad tail, and a large head with a small beak in front of its mouth. Its body would have been covered in scaly skin.
Tenontosaurus was an herbivore, feeding mainly on leaves and ferns, but also snacking on wood and fruits from time to time. Its round beak was used to strip leaves off branches, while the many teeth in the back of its mouth would grind together, processing the leaves.
Like most other large ornithopods, Tenontosaurus was a low-level browser, only being able to access vegetation 3 meters off the ground by rearing; however, due to its powerful, U-shaped beak and the sharp teeth at the back of its mouth, it was not limited to eating soft vegetation, and could likely eat fruits hanging from trees and even the wood covering their stems. As Tenontosaurus was a heavily-built, bipedal ornithischian with a massive tail, it likely would have not been a very fast or agile runner; despite this, it could likely use its powerful legs to achieve short bursts of speed in order to escape from predators. As time passed on, Tenontosaurus' habitat would transform from arid scrubland to tropical marsh. However, this change in climate would see an increase in Tenontosaurus populations rather than a decrease, showing that it was a very adaptable animal; why it managed to survive these changes to its environment is a mystery.
In popular cultureEdit
Due to many portrayals showcasing it being attacked by Deinonychus, Tenontosaurus has seen a small boost in popularity. Nowadays, it is often featured in smaller pieces of media (usually documentaries) like Monsters Resurrected, where it continues to be a prey item for not only Deinonychus, but also for the large theropod Acrocanthosaurus.