Specimen ZPAL Ga.9/170 from the Oxfordian (Late Jurassic) from Kłęby, West Pomerania; lateral and apical view.

Diagnoza

Shell pupiform, with very weakly convex whorls. Teleoconch ornamentation with wide, blunt axial ribs and flat-topped, band-like spiral ribs. Later in ontogeny axial ribs disappearing.

Porównanie

The protoconch is unknown, therefore its status remains unclear as does the status of the whole genus.

Autekologia

Występowanie geograficzne

Europe; in Poland found at Kłęby outcrop, (West Pomerania), Poland.

Zasięg czasowy

Oxfordian (Late Jurassic). 

Materiały muzealne

Material from Europe (France) and two shells from Poland. 

Literatura

Cossmann, M. 1913. Contributionsàla paléontologie Française des terrains jurassiques. III. Cerithiacea et Loxonematacea. Mémoires de la Société Géologique de France, série Paléontologie 46, 1–263.

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