Gatunek typowy
Rissoina semiglabrata Adams, 1854. Recent, Indo−Pacific.

Opis

Shell small to large in size, non−umbilicate, ovate−conical to elongate−conical, smooth, often shiny, often with axial ribbing on upper teleoconch whorls, sometimes with spiral sculpture and, in one species, with thin axial lamellae over whole  surface. Peristome pyriform, channeled posteriorly, rounded or weakly channeled anteriorly, peristome simple; outer lip usually with heavy varix, sometimes dentate within, opisthocline. Protoconch 2 smooth, sometimes decollate, multispiral to paucispiral.

Synonimy

Zasięg czasowy

Jurassic to Recent.

Literatura

Adams, H. &  Adams, A. 1854. The Genera of Recent Mollusca; Arranged According to their Organization. 138 pls. John Van Voorst, London.

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