Hadrosaur Jaw Hinge

Age - 67 / 66 Million Years Old

Late Cretaceous

Species - Hadrosaurus

Bone - Jaw Hinge

Discovered - Newell, South Dakota, Hell Creek Formation

** Hadrosaurus **

Hadrosaurus is a genus of hadrosaurid ornithopod dinosaurs that lived in North America during the Late Cretaceous Period in what is now the Woodbury Formation about 80 million to 78 million years ago. The holotype specimen was found in fluvial marine sedimentation, meaning that the corpse of the animal was transported by a river and washed out to sea.