Anningia megalops Broom, 1927 is based upon a poorly preserved, incomplete skull and was interpreted originally as an intermediate form between therapsids and primitive nontherapsid synapsids (pelycosaurs). Restudy of the type specimen indicates that A. megalops is a nondiagnosable primitive synapsid and is, therefore, declared to be a nomen vanum.

You do not currently have access to this article.