Diagnoza

Shell very small; teleoconch with ramp and axial ribs; ribs shorten in ontogenesis and finally disappear completely; base convex, with a small umbilicus and with spirals, not angulate; aperture broadly oval. Inner lip without callus.

Porównanie

P. gofasi Kaim, 2004 differs in the earlier disappearance of the axial ribs and the lack of the subsutural ramp.

Autekologia

Występowanie geograficzne

Only in type locality.

Zasięg czasowy

Mid Jurassic; late Bathonian‒mid Callovian

Materiały muzealne

Ca. 30 specimens, mostly juveniles (BGR).

Literatura

Gründel, J. 2000. Archaeogastropoda aus dem Dogger Norddeutschlands und des nordwestlichen Polens. Berliner geowissenschaftliche Abhandlungen, Reihe E, 34: 205–253.

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