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Traits taxon detailsPtygmactrum externum Cooper & Grant, 1976 †
1716266 (urn:lsid:marinespecies.org:taxname:1716266)
accepted
Species
marine,
fossil only
Cooper, G. A.; Grant, R. E. (1976). Permian Brachiopods from West Texas, IV. <em>Smithsonian Contributions to Paleobiology.</em> 21: 1923-2607. [details]
Traits (2025). Ptygmactrum externum Cooper & Grant, 1976 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1716266 on 2025-05-27
Marine Species Traits editorial board (2025). Marine Species Traits. Ptygmactrum externum Cooper & Grant, 1976 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1716266 on 2025-05-27
Date action by
original description
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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