Traits taxon details
original description
Nazarov, B. B.; Popov, L. E. (1980). Stratigrafiya i fauna kremnisto-karbonatnykh otlozhenij Kazakhstana (Stratigraphy and fauna of Ordovician siliceous-carbonate deposits of Kazakhstan). <em>Geologicheskiy Instituta Akademii Nauk SSSR, Trudy.</em> 331: 1-190, 32 pls. [details] Available for editors 
additional source
Hansen, J.; Holmer, L. E. (2011). Taxonomy and biostratigraphy of Ordovician brachiopods from northeastern Ny Friesland, Spitsbergen. <em>Zootaxa.</em> 3076(1): 1-122., available online at https://doi.org/10.11646/zootaxa.3076.1.1 [details] Available for editors 
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