Traits taxon details
original description
Boucot, A. J.; Johnson, J. G.; Staton, R. D. (1964). On some atrypoid, retzioid, and athyridoid Brachiopoda. <em>Journal of Paleontology.</em> 38: 805-822. [details]
additional source
Treatise on Invertebrate Paleontology. (1997-2007). Part H revised, Brachiopoda. <em>Geological Society of America, Boulder; and University of Kansas Press, Lawrence,.</em> vol. 1-6. [details]
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