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†Crenispirifer effrenus Cooper & Grant 1976

urn:lsid:organismnames.com:name:2269708

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2712

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†Crenispirifer effrenus Cooper & Grant 1976

Cooper & Grant 1976. Permian brachiopods of west Texas, 5. Smithsonian Contributions to Paleobiology, No. 24 1976: i-vi,2609-3159