Traits taxon details
original description
Cooper, G. A.; Grant, R. E. (1969). New Permian brachiopods from west Texas. <em>Smithsonian Contributions to Paleobiology.</em> 1: 1-20. [details]
additional source
Cooper, G. A.; Grant, R. E. (1976). Permian Brachiopods from West Texas, IV. <em>Smithsonian Contributions to Paleobiology.</em> 21: 1923-2607. [details]
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