A NEW SPECIMEN OF PROMOSCHORHYNCHUS PLATYRHINUS BRINK 1954 (MOSCHORHINIDAE) FROM THE DAPTOCEPHALUS-ZONE (UPPER PERMIAN) OF SOUTH AFRICA

摘要

The morphology of the skull of Promoschorhynchus platyrhinus (Moschorhinidae) from theudDaptocephalus-zone (Upper Permian) of South Africa) is described with special reference to theudpalate and posterior part of the skull. Promoschorhynchus is compared with Moschorhinus and consideredudto be a vaild genus mainly differing from Moschorhinus in retaining a longer snout, and inudpossessing a more primitive morphology of the palatal plates of the premaxillae and vomers.udPromoschorhynchus also differs from Moschorhinus in having developed a sharp crista choanalis and audfairly broad epipterygoid. The composition of the South African Moschorhinidae is briefly discussedudand is considered temporarily as consisting of five genera: M oJchorhinUJ (.1 = TigriJuchuJ).udCerdoPJ, PromoJchorhynchUJ and Hewittia. TigriJuchUJ and MOJchorhinuJ are probably synonyms.