1978  Pentagonoceras  Zhao, Liang & Zheng: 156, 182.
     2002  Pentagonoceras.-Leonova: S104.

Type species: Pentagonoceras costatum Zhao, Liang & Zheng, 1978, p.156.OD.

[Zhao et al., 1978]: Shell moderately large, evolute, discoidal in shape, with pentagonal whorl section. Venter broadly arched
with medial keel. Lateral sides steeply inclined toward umbilicus, with rather coarse ribs and strong terminal nodes on
the ventrolateral shoulders. Umbilicus wide and shallow with indistinct umbilical ridges. Suture line ceratitic.