Phylogeny and classification of the tetrapodes - v.2 ed. by Michael J. Benton. - Oxford Clarendon 1988 - v.1 v.2 x,329p x,377p - Systematics Association special Volume No. 35A No. 35B . -v.1. Amphibians, reptiles, birds.-v.2: Mammals. ISBN: 0198577052 Dewey Class. No.: 597.6 / N88.1-N88.2