Hadrosaur Muscle Anatomy. It also allows for bilateral jaw curling in some of these dinosaurs. Cover art by Julius Csotonyi.
For other muscles in the hadrosaur we applied methods of Snively and Russell and Rayfield et al. The most recognizable aspect of hadrosaur anatomy is the flattened and laterally stretched rostral bones which gives the distinct duck-bill look. Hadrosaurs chewed food by grating the upper jaw teeth against the lower jaw teeth.
Hadrosaurs are found in North America Europe and Asia.
Hadrosaurs chewed food by grating the upper jaw teeth against the lower jaw teeth. Hadrosaurids are further classified into two sub-families the lambeosaurines and the saurolophines. The hadrosaurines Hadrosaurinae lack the cranial crests and are larger. In it I discuss the anatomy of jaw elements in a few different hadrosaur genera to understand qualitatively how different elements were able to move against each other during feeding and what this meant for the entire jaw mechanism as a whole.
