Gatunek typowy
Tetragonites grimmeri Kittl, 1904

Opis

Conch small, flat, discoidal with umbilicus moderately wide to wide; some species with a quadrangular whorl of the inner coils; ornamentation  strong, concave-convex and rectiradiate running, frequent forked ribs; lobe line with a moderately narrow external lobe, the flanks of which are almost parallel; median saddle low, ventrolateral saddle broadly rounded; adventitious lobe rounded, V-shaped.

Synonimy
Tetragonites Kittl, 1904

Zasięg czasowy

Carboniferous, Visean

Literatura

Kittl, E. 1904. Entogonites, eine Cephalopodengattung aus dem bosnischen Kulm. Verhandlungen der kaiserlich-königlichen geologischen Reichsanstalt 14: 322.