Colbert, Edwin H. 1905-2001.
Evolution of the vertebrates : a history of the backboned animals through time /
Edwin H. Colbert.
- New York : Wiley, [1955].
- 479 p. : illus.
Includes bibliography.
Vertebrates, Fossil.
Vertebrates--Evolution.
Vertebrates--Phylogeny.
QE841 C68