Gatunek typowy
Exelissa strangulata (d’Archiac, 1840). Bathonian (Mid Jurassic), d’Eparcy, l’Aisne, France.

Opis

Slender pupiform shell. Suture narrow and shallow. Whorls slightly convex. Sculpture with wide, blunt axial ribs and much weaker, band−like spiral ribs. Number of spiral ribs increases during ontogeny. Spirals swollen when traversing axial ribs. Base ornamented with spiral ribs. Peristome small and round, angled in adapical part, with an indistinct canal in the abapical part.

Synonimy

Zasięg czasowy

Jurassic (Hettangian) to Late Jurassic/ Early Cretaceous (Portlandian) of Europe; Upper Cenomanian of Asia (Armenia); Pliensbachian of North Africa (Morocco); Aalenian Oxfordian of North America (USA); ?Campanian-Maastrichtian of South America (Peru).

Literatura

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

Piette, M. 1860. Sur un nouveau genre de Gastéropodes. Bulletin de la Société Géologique de France. Série 218, 14–16.