Parapsid skulls: Mycterosaurus, Araeoscelis, Pleurosaurus, and Sauranodon, Samuel Wendell Williston, 1925

Illustration of skulls of mycterosaurus, araeoscelis, pleurosaurus, and sauranodon from the osteology of the reptiles (1925). Date: 1925. The Osteology of the Reptiles p64