beudanticeras hirtzi
Here an ammonite will beudanticeras layer of Courcelles which is distinguished from usual will beudanticeras beudanti by its squater and rounder section. One can try to bring it closer the specimen describes by Maurice Collignon. (not too much to refer to the cabin which is a little deformed and flattened.
Bibliography: faunas albiennes of Maurice Collignon (gault of Madagascar)