Specimen ZPAL Ga.9/8 from the Valanginian (Early Cretaceous) of Wąwał in lateral view.

Diagnoza

(after Gründel, 1999e) Last whorl of protoconch with some parasigmoidal axial ribs. Teleoconch whorls convex,sutures distinct. Axial ribs thick, rounded on top. Spiral striae rather strong, 15–20 from suture to suture.

Porównanie

The adult shell peristome is unknown for this species. Gründel (1999) found aporrhaid−like characters in Bralitzia compacta (Gründel, 1999) which has an adult shell peristome typical of rissoinids

Autekologia

Występowanie geograficzne

Only in type locality.

Zasięg czasowy

Valanginian (Early Cretaceous).

Materiały muzealne

Over 1000 shells from the type locality.

Literatura

Gründel, J. 1999e. Truncatelloidea (Littorinimorpha, Gastropoda) aus dem Lias und Dogger Deutschlands und Nordpolens. Berliner Geowissenschaftliche Abhandlungen, Reihe E30, 89–119.

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

Schröder, M. 1995. Frühontogenetische Schalen jurassicher und unterkretazischer  Gastropoden aus Norddeutschland und Polen. Palaeontographica, Abteilung A238, 1–95.