Specimen  ZPAL Ga.9/250 from the Late Bajocian (Mid Jurassic) of Kawodrza−Sowa (Częstochowa region) in lateral and apical view.

Diagnoza

Porównanie

Pobably a new species differing by the presence of very strong keel and the lack of spiral  microornamentation. The lack of a protoconch and the badly preserved surface of the teleoconch prevents establishing a new species. Moreover, the shells may represent both early species of Carinathilda or Erratothilda.

Autekologia

Występowanie geograficzne

Kawodrza‒Sowa (Częstochowa  region), Poland.

Zasięg czasowy

Late Bajocian (Mid Jurassic).

Materiały muzealne

ZPAL: Three shells.

Literatura

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