Cooper, G. A.; Grant, R. E. (1976). Permian Brachiopods from West Texas, IV. <em>Smithsonian Contributions to Paleobiology.</em> 21: 1923-2607.[details]
Traits (2024). Petasmatherus mundus Cooper & Grant, 1976 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1716225 on 2024-09-17
Marine Species Traits editorial board (2024). Marine Species Traits. Petasmatherus mundus Cooper & Grant, 1976 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1716225 on 2024-09-17
original descriptionCooper, 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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