First record of typhine gasteropods from the Eocene of southeastern Nigeria

Abstract

Siphonochelus nigeriensis sp. nov., found in the Eocene Ameki Formation of southeastern Nigeria, is described and figured. With four smooth varices and tubes which are incorporated into it per whorl, and which are nearer to succeeding than to preceding varices, it is a typical siphonochelus. This is the first record of fossil typhine gasteropods from African strata and therefore seems to be of considerable interest, also from a palaeobiogeographical point of view.