Amsden, T. W. (1958). Stratigraphy and paleontology of the Hunton Group in the Arbuckle Mountain Region. Part II - Haragan articulate brachiopods; Part III - Supplement to the Henryhouse brachiopods. Oklahoma Geological Survey Bulletin. 78: 1-157, 14 plates.
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Amsden, T. W.
1958
Stratigraphy and paleontology of the Hunton Group in the Arbuckle Mountain Region. Part II - Haragan articulate brachiopods; Part III - Supplement to the Henryhouse brachiopods