1985  Guiyangoceras Zhou: 196.
     1987  Guiyangoceras.-Zhou: 331.
     2002  Guiyangoceras.-Leonova: S91.
     2007  Guiyangoceras.-Zhou: 124.

Type species: Guiyangoceras guiyangense Zhou, 1985, p.197; OD.

[Zhou, 1985, p.196: Shell small, involute, subglobose, with a small and deep umbilicus. Venter wide and rounded, rather
convex on sides; dorsum depressed. Whorl cresent. Growth lines and constrictions developed, forming a broad ventral
salient. Suture subammonitic, with 4 pairs of external and internal lobes respectively. Ventral lobe wide; medial saddle
wide and quadrate; prongs narrow, umbilical and dorsal lobes incompletely tripartite.
Formula (V1V1) L2L1L2.1 L2.1 (U2U1U2):I2.1I2.1I1I2(D2D1D2).

The present genus is similar to Kufengoceras in the shape of shell, the number of the lobes and the digitation, but differs
from the latter in the more primitive suture, which is represented by the wider ventral lobe, the lower and quadrate
medial saddle and the simpler digitated external lobes.].