1948  Girtyoceras ornatissimum.-Miller & Youngquist: 669, pl.100 fig.5-7.
     1952  Girtyoceras sp. Miller, Youngquist & Nielsen: 158,  pl.26 fig.11-13.
     1965  Girtyoceras ornatissimum.-Gordon: textfig.64C.
non  ----  Girtyoceras cf. G. ornatissimum.-Gordon: 232, pl.24 fig.37-39 [non teste Titus: = Edmooroceras sp.].
     1971  Eumorphoceras ornatissimum.-Ruzhentsev &  Bogoslovskaya: 181.
     1988  Edmooroceras ornatissimum.-Korn: 66.
     1999  Sulcogirtyoceras ornatissimum.-Titus: 163.

[Holotype: USNM 112997].