1937  Schistoceras unicum Miller & Owen: 420, pl.52 fig.16, 17, textfig.5.
pt. 1940  Schistoceras hildrethi.-Miller & Furnish: 539.
     1958  Pintoceras unicum.-Miller & Furnish: 257, 263, textfig. 3c, pl.33 fig.1-4.
     1962  Pintoceras unicum.-Unklesbay: 101, pl.17 fig.1-3.
     1994  Eoschistoceras unicum.-Boardman,Work,Mapes & Barrick: 63, pl.3 fig.22,23,27,28.
     2001  Eoschistoceras unicum.-Shkolin: 183, text-fig.16b, pl.36 fig.3.

Holotype SUI

Fig. see TAX3088 b (suture).