1978  Planodiscoceratinae Zhao, Liang & Zheng: 81, 176.

[Zhao et al., 1978] Shell small to medium, moderately evolute to
involute, thinly discoidal or lenticular. Venter fastigate, with
sharp keel. Flanks wide, generally concave, slightly convex in
some forms. Umbilical shoulders slightly flared. Suture
goniatitid.