Gatunek typowy
Pterocera lorieri d’Orbigny, 1850. Bajocian (Mid Jurassic), Guéret, Sarthe, France.

Opis

Shell moderately large to medium sized. Whorls initially rounded, smooth, then angulated and, finally keeled. Teleoconch ornamented with spiral lirae. Body whorl ornamented with two keels. Anterior canal long, extended into spin−like process, straight or curved anteriorly. Posterior canal absent. Outer lip somewhat extended with two long, slender, digitate spin−like processes of which the lower somewhat broader and longer.

Synonimy
Alaria Morris & Lycett, 1850 non Schranck, 1788; Pterophorus Piette, 1891

Zasięg czasowy

Bajocian (Mid Jurassic) to Portlandian (Late Jurassic).

Literatura

Gabb, W.M. 1868. An attempt at a revision of the two families Strombidae and Aporrhaidae. American Journal of Conchology. New Series 4, 137–149.

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