Traits taxon details
original description
(of ) Nikitin, I. F.; Popov, L. E. (1984). Chast II. Brakhiopody bestamakskoy i sargaldakskoy svit (srednii ordivik) [Brachiopods and biostratigraphy of the middle and upper Ordovician of the Chingiz Range. Part II. Brachiopods from the Bestamak and Sargaldak formations (middle Ordovician).]. pp. 126–166. In: Bandaletov, S. M. (Ed.). <em>Brachiopody i biostratigrafia srednego i verkhnego ordovika khrebta Chingiz.</em> Nauka, Alma-Ata, 196 pp. [details]
new combination reference
Popov, L. E.; Nikitin, I. F.; Sokiran, E. V. (1999). The earliest atrypides and athyridides (Brachiopoda) from the Ordovician of Kazakhstan. <em>Palaeontology.</em> 42(4): 625-661, 4 plates. [details]
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