Abstract

The type specimen of Goniatites choctawensis Shumard had been lost, but a neotype was selected Branson, Elias, and Amsden. Later study has revealed the identity of this species with Glyphioceras cumminsi Hyatt (1893) from the Barnett Formation of Texas, to which G. choctawensis, originally described from the Caney Shale Upper Mississippian of Oklahoma, becomes a senior synonym. A more finely lirate species of goniatite, found in the Caney Shale, the upper part of the Moorefield Formation of Arkansas, and the lower part of the Chainman Shale of Utah, which occurs some tens of feet below the lowest G. choctawensis, is described, and newly named Goniatites multiliratus. Some goniatites from the Casey Shale described by Girty (1909) as G. choctawensis should be referred to G. multiliratus n. sp., and some others should be referred to G. granosus Portlock.

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