Revision as of 19:10, 1 March 2011 by Eire(talk | contribs)(New page: ==Dimetrodon== Dimetrodon is a pelycosaur synapsid, which according to cladistics are a paraphyletic group which leads into mammalia, making them an "ancestor" group. User:Eire March ...)
Dimetrodon is a pelycosaur synapsid, which according to cladistics are a paraphyletic group which leads into mammalia, making them an "ancestor" group. User:Eire March 02 19.09 2011