File:Pasta - triceratops brain.jpg

Summary
1922 diagram of the skulls of Triceratops (at top) and Trachodon (Edmontosaurus): illustrating the small size of the brains shown in black. The brains of these animals, twice the bulk of an elephant, were the size of a man's fist. Date

1922(1922) Source

Lucas, Frederic Augustus [1901] (1922). Animals of the Past: An Account of Some of the Creatures of the Ancient World (PDF), 6, p. 84, New York: American Museum of Natural History. Retrieved on 2009-03-11. Author

American Museum of Natural History staff