Opis

Type species: Trochus binodosus Münster, 1841. Late Triassic, Alps, Italy
Conical shell with inner nacreous layer present. Protoconch with one whorl, subplanispiral. Aperture round; peristome complete. Teleoconch with strong axial ribs crossed by a few finer spiral cords. Base with some, usually three, spiral cords with or without umbilicus.

Synonimy

Zasięg czasowy

Mid Triassic to Late Cretaceous.

Literatura

Cossmann, M. 1895a. Paléontologie I. Paléozoologique. Gastéropodes. Annuaire Géologique Universel 10, 737–780.

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