1952  Cowdaleoceras Bisat: 166.
     1957  Beyrichoceras.- Treatise: 57.
     1960  Beyrichoceras.- Ruzhencev: 201.
     1962  Beyrichoceras.- Osnovy: 366.
     1990  Girtyoceras.-Riley: 152.

Type species: Cowdaleoceras difficile Bisat, 1952, p.177 [OD].

A:   Conch form discoidal, with very narrow umbilicus.
B:   Ornamentation consisting of fine, sometimes crenulate growth striae, in some species crossed by fine spiral striae.
D:   Constrictions may be present.
G:   Ventral lobe moderately high, its sides being subparallel at the base, but diverging orad with wide angle; the first
       lateral saddle spatulate, with subacute tip. Adventitious lobe wide.

[Relationship uncertain, probably junior synonym of Girtyoceras].