1962b Gastrioceras grileyi.-Quinn: 116, fig.2.
     1963  Gastrioceras grileyi.-Quinn: pl.2.
     1968  Gastrioceras attenuatum McCaleb: 43, pl.3 fig.5-10,  textfig.9B, 10.
     1977  Gastrioceras attenuatum.-Saunders, Manger & Gordon,  pl.6 fig.4,5.
     1992  Gastrioceras attenuatum.-Manger, Miller & Mapes: 108, pl.1 fig.8.

Fig. TAX4729 B (suture, from McCaleb, 1968, fig.9B).