Traits taxon details
original description
Termier, G.; Termier, H.; & Pajaud, D. (1966). Découverte d'une Thécidée dans le Permien du Texas. <em>Comptes Rendus de l'Académie des Sciences, Serie D.</em> 263: 332-335. [details]
additional source
Cooper, G. A.; Grant, R. E. (1975). Permian Brachiopods of West Texas, III. <em>Smithsonian Contributions to Paleobiology.</em> 19: 795-1921. [details]
additional source
Tazawa, J.-I.; Miyake, Y.; Okumura, Y. (2013). <i>Cooperina</i> (Productida, Brachiopoda) from the Lower Permian of Japan. <em>Paleontological Research.</em> 17(4): 335-338., available online at https://doi.org/10.2517/1342-8144-17.4.335 [details]
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