Specimen ZPAL Ga.9/231 from the Valanginian (Early Cretaceous) of Wąwał in lateral and apical view.

Diagnoza

Shell elongate, 1.7 times as high as broad. Protoconch hyperstrophic, diverging about 104° from teleoconch axis, ornamented by adapical an abapical axial folds. Teleoconch starting with three prominent and one subsutural spiral rib. Whorls weakly angulated at spiral ribs. Spiral ribs intersected by prosocline axial lirae.

Porównanie

P. wonwalensis differs from the most similar P. conoidea by much weaker axial ornamentation composed of fine lirae.

Autekologia

Występowanie geograficzne

Only in type locality.

Zasięg czasowy

Valanginian (Early Cretaceous).

Materiały muzealne

68 shells.

Literatura

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.