Gatunek typowy
Chemnitzia periniana D’Orbigny. Pliensbachian, Châlonsur-Saône, France.

Opis

Shell whorls flattened-convex; collabral riblets not extending on to base and with parasigmoid curve less pronounced than in Zygopleura; weak spiral threads on whorl side, stronger ones on base; apertural margin slightly reflected anteriorly to form illdefined spout, possibly a rudimentary siphonal outlet. Differs from Procerithiurn in its finer spiral ornamentation and nongradate whorls.

Synonimy

Zasięg czasowy

Late Triassic (Carnian) to Mid Jurassic (Bajocian)

Literatura

Koken, E. 1892. Über die Gastropoden der rothen Schlernschichten nebst Bemerkungen über Verbreitung und Herkunft einige triassischer Gattungen. Neues Jahrbuch für Mineralogie 1892 (2): 25–36.