Henry, T. W.; Gordon, M. Jr. (1985). Chesterian davidsoniacean and orthotetacean brachiopods, Ozark region of Arkansas and Oklahoma. Journal of Paleontology. 59: 32-59.
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Henry, T. W.; Gordon, M. Jr.
1985
Chesterian davidsoniacean and orthotetacean brachiopods, Ozark region of Arkansas and Oklahoma