Cretaceous faunas from Zululand and Natal, South Africa. The Albian ammonite genus Douvilleiceras de Grossouvre, 1894

Abstract

The cosmopolitan ammonite genus Douvilleiceras de Grossouvre, 1894, is the commonest ammonite in the Lower and lower Middle Albian in northern KwaZulu-Natal. Two variable, dimorphic species, D. mammillatum (Schlotheim, 1813) and D. inaequinodum (Quenstedt, 1849) are recognized, of which the majority of previously named taxa referred to the genus are regarded as synonyms.