Limbs of aquatic reptiles: Platecarpus and Clidastes (Mosasauria), Ophthalmosaurus and Ichthyosaurus platydactylus (Ichthyosauria), Samuel Wendell Williston, 1925

Illustration of limbs of aquatic reptiles: platecarpus and clidastes (mosasauria), ophthalmosaurus and platypterygius (ichthyosauria) from the osteology of the reptiles (1925). Date: 1925. The Osteology of the Reptiles p193