Meek, F. B.; Hayden, F. V. (1865). Palaeontology of the Upper Missouri: A report upon collections made principally by the expeditions under command of Lieut. G. K. Warren, U. S. Top. Engrs., in 1855 and 1856. Invertebrates. Part I. Smithsonian Contributions to Knowledge. 14(172):ix + 1–136, pl. 1–5.
195733
Meek, F. B.; Hayden, F. V.
1865
Palaeontology of the Upper Missouri: A report upon collections made principally by the expeditions under command of Lieut. G. K. Warren, U. S. Top. Engrs., in 1855 and 1856. Invertebrates. Part I