Pectoral girdles (Dinosauria): Gorgosaurus, Allosaurus, Triceratops, and Morosaurus, Samuel Wendell Williston, 1925

Illustration of pectoral girdles of gorgosaurus, allosaurus, triceratops, and camarasaurus from the osteology of the reptiles (1925). Date: 1925. The Osteology of the Reptiles p141 Fig-113