Gatunek typowy
Rostellaria hamus Eudes−Deslongchamps, 1842. Bajocian (Mid Jurassic), Bayeux, France.

Opis

Shell moderately large to medium sized. First whorl smooth, subsequently angulated, with fine spiral lirae and axial ribs. Final turn ornamented with only spiral lirae and strong keel. Base ornamented with another, weaker spiral keel. Peristome with narrow straight or weakly  curved spine−like process of anterior channel. Outer lip with one, straight or weakly back−bent extension of keel, hook−like curved at the end. Inner lip thin, narrow.

Synonimy
Bicorempterus Gründel, 2001

Zasięg czasowy

Late Jurassic of Europe

Literatura

Cossmann, M. 1904. Essais de Paléoconchologie Comparée. Sixième Livraison.151 pp. M. Cossmann, F.R. de Rudeval, Paris

Kaim, A. 2004. The evolution of conch ontogeny in Mesozoic open sea gastropods. Palaeontologia Polonica 62, 3–183.