| Original name | : | |
Newberry, 1868. Proc. Amer. Ass. Adv. Sci. 1867: 146; Hitchcock, 1868. Geol. Mag. 5: 184; Newberry, 1873. Rep. geol. Surv. Ohio 1 (2 Pal.): 313. |
| Emended diagnosis (emend.) | : | |
Carr, R.K. & Hlavin, W.J. 2010. Zool. J. Linn. Soc. 159: 198 ("emended from Newberry, 1868").
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