Traits taxon details
original description
Fredericks, G. N. (1924). Paleontological Notes. 2. On Upper Carboniferous spiriferids from the Urals [in Russian]. <em>Izvestiâ Geologičeskogo Komiteta.</em> 38: 295-324. [details]
basis of record
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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