Opis

Syn. Levihelix Gründel, 2000
Type species: Cyclostrema (Daronia) jaffaensis Verco, 1909. Recent, deep waters off of South Australia.
Small shell, planispiral, with carinating cords on lateral flanks, suture impressed, aperture trapezoidal, ovate to reniform, peristome simple. Umbilicus very wide and perspective.

Synonimy

Zasięg czasowy

Mid Bathonian (Mid Jurassic) to Recent.

Literatura

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