Gorjansky, V. Y.; Popov, L. E. (1985). Morfologiya, sistematicheskoe polozhenie i proiskhozhdenie bezzamkovykh brakhiopod s karbonatnoj rakovinoj.
[The morphology, systematic position, and origin of inarticulate brachiopods with carbonate shells]. Paleontologicheskii Zhurnal. 3: 3-13.
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Gorjansky, V. Y.; Popov, L. E.
1985
Morfologiya, sistematicheskoe polozhenie i proiskhozhdenie bezzamkovykh brakhiopod s karbonatnoj rakovinoj.
[The morphology, systematic position, and origin of inarticulate brachiopods with carbonate shells]
