Gatunek typowy

Opis

Syn. Riselloidea Cossmann,1909
Type species: Trochus ottoi Philippi, 1844. Pleistocene, Sicily, Italy.
Shell conical with convex whorls. Teleoconch is sculptured with axial and spiral ribs. Nodes  appearing at  intersections of ribs. Oblique aperture, angular; peristome complete. Base with some, usually four nodose spiral cords, with or without umbilicus.

Synonimy

Zasięg czasowy

Late Triassic to Recent.

Literatura

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

Seguenza, L. 1902. Molluschi poco noti dei Terreni Terziarii di  Messina. Trochidae e Solariidae. Bolletino della Societa Geologica Italiana 21, 455–465.