1966  Pachydiscoceras Chao et Liang:
     1978  Pachydiscoceras.-- Zhao, Liang & Zheng: 135, 181.
     2002  Pseudotirolites.-Leonova: S102.

Type species: Pachydiscoceras changhsingense Chao et Liang, 1966.

[Zhao et al., 1978]: Shell rather large, evolute, thickly discoidal with squarish whorl section. Venter broadly arched with
remarkable medial keel. Lateral sides rather narrow, inclining toward the umbilicus, becoming wide, flat at mature stage,
marked by strong ribs and ventro-lateral nodes. Suture line ceratitic with long, broad lateral lobe. The saddles range
forward from the outer periphery toward the umbilicus.