Gatunek typowy
Hemizyga (Plocezyga) corona Knight, 1930. Westfalian (Upper Carboniferous), Feefee Creek, Missouri, USA.

Opis

Teleoconch ornamented with strong axial ribs not reaching base and spiral lirae ornamenting both the flanks and the base of whorls.

Synonimy

Zasięg czasowy

Westfalian (Late Carboniferous) to Mid Bathonian (Mid Jurassic).

Literatura

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

Knight, J. B. 1930. The gastropods of the St. Louis, Missouri, Pennsylvanian outlier: the Pseudozygopleurinae. Journal of Paleontology Memoir 4 (1), 1-88.