Article

Thewissen, J.G.M., Cooper, L.N., Clementz, M.T., Bajpai, S. & Tiwari, B.N. 2007. Whales originated from aquatic artiodactyls in the Eocene epoch of India. Nature 450, 20 Dec 2007: 1190-1194.

Original Classification (root)

(Clade) Cetartiodactyla Montgelard, Catzeflis & Douzery 1997