A small new fauna of ammonites, Ledoceras massoni n. gen. n. sp., Prionocyclus, Subprionocyclus, Diplomoceras, from the center of the Cuanza basin of Cape Ledo, Angola, is described. Inocerames from the same fauna are too fragmentary to be described and named. The ammonites are assigned to the end of the Turonian or the beginning of the Coniacian. The addendum compares Ledoceras massoni n. sp. and Barroisiceras minimum.