1966  Planodiscoceras Chao & Liang:
     1978  Planodiscoceras.-Zhao, Liang & Zheng: 81, 176.
     2002  Pericarinoceras.-Leonova: S105.

Type species: Planodiscoceras gratiosum Chao & Liang, 1966,

[Zhao et al.] Shell convolute, with narrow fastigate venter, with remarkable keel. Whorls high, with paralleled or slightly
concave sides, ornamented with fine S-shaped growth lines or wrinkles on the lateral sides and fine spiral striartions on
the venter and ventro-lateral shoulders. Umbilicus moderately wide, bordered by steep walls and slightly flared shoulders.
Suture goniatitic, with short ventral lobe, rather long lateral lobe and short umbilical lobes on each external side.