Holotype ZPAL Ga.9/63 from the Late Valanginan (Early Cretaceous) of Wąwał in lateral and view; white arrow indicate demarcation between protoconch and teleoconch

Diagnoza

Protoconch highly conical with first 1.25 whorls not ornamented. Rest of protoconch ornamented with orthocline axial ribs and interstitial spiral lirae. Base of the protoconch demarcated by spiral ribbon and weak angulation of whorl situated a little higher. Demarcation between protoconch and teleoconch clearly visible, truncated. Teleoconch ornamented with strong axial ribs and blunt spiral ribs. Blunt nodes appearing at intersections.

Porównanie

This species has sculpture similar to the teleoconch as found in Vatopsis sp. of Gründel (2001) but it differs in having the abapical ribbon of the protoconch hidden under the suture and a clearly visible spiral ornamentation of the protoconch.

Autekologia

Występowanie geograficzne

Only in type locality

Zasięg czasowy

Late Valanginian (Early Cretaceous).

Materiały muzealne

ZPAL: Two shells.

Literatura

Gründel, J. 2001. Nerithimorpha und weitere Caenogastropoda (Gastropoda) aus dem  Dogger Norddeutschlands und desnordwestlischen Polens. Berliner Geowissenschaftliche Abhandlungen, Reihe E36, 45–99.

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