Gw mau tau Lihat pula dari Basilosaurus

Thewissen, J. G. M. (editor). The Emergence of Whales: Evolutionary Patterns in the Origin of Cetacean. Plenum Press, New York and London, 1998. ISBN 0-306-45853-5

Zimmer, Carl. At the Water's Edge''. Free Press, 1998.

Haines, Tim & Chambers, Paul. (2006) The Complete Guide to Prehistoric Life. Canada: Firefly Books Ltd.

Barry Cox, Colin Harrison, R.J.G. Savage, and Brian Gardiner. (1999): The Simon & Schuster Encyclopedia of Dinosaurs and Prehistoric Creatures: A Visual Who's Who of Prehistoric Life.Simon & Schuster.

Bejder, Lars and Hall, Brian K. Limbs in whales and limblessness in other vertebrates: mechanisms of evolutionary and developmental transformation and loss. Evolution and Development, 2002.