1911  Dimorphoceras oklahomae Girty: 152.
     1915  Dimorphoceras oklahomae.-Girty: 260, pl.35 fig.2-2b.
     1924  Dimorphoceras texanum.-Morgan: 100, pl.51 fig.6.
     1937  Neodimorphoceras oklahomae.-Plummer & Scott: 347, pl.
           34 fig.9-11.
     1950  Neodimorphoceras oklahomae.-Miller & Downs: 201.
     1962  Neodimorphoceras oklahomae.-Unklesbay: 113, pl.18
           fig.7.