Dimetrodon (Theromorpha), skeleton and life restoration, Samuel Wendell Williston, 1925
Illustration of dimetrodon skeleton and life restoration from the osteology of the reptiles (1925). Date: 1925. The Osteology of the Reptiles p229
Author: Samuel Wendell Williston (1851–1918)Source: https://commons.wikimedia.org/Loading...