Gatunek typowy
Cristalloella cassiana Bandel, 1995. Early Carnian (Late Triassic), Alpe di Specie above Carbonin, Italian Alps.

Opis

Teleoconch slender, elongated. Sinistral protoconch gradually changed intodextral, smooth or with weak axial ribs, terminated with thickened peristome. First teleoconch whorl with medial keel and numerous, fine spiral ribs. Spiral ribs crossed by weaker, sometimes sinusoidal axial ribs.

Synonimy
Wonwalica Schröder, 1995

Zasięg czasowy

Carnian (Late Triassic) to Valanginian (Early Cretaceous).

Literatura

Bandel, K. 1995. Mathildoidea (Gastropoda, Heterostropha) from the Late Triassic St Cassian Formation. Scripta Geologica 111, 1–83.

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