Efremov IA 1954. The fauna of terrestrial vertebrates in the Permian copper sandstones of wester Cis-Urals: Travaux de I’institut Paleozoologique de l’Academie des Sciences de l’URSS, v. 54, 416pp.
Tchudinov 1960. Upper Permian therapsids of the Ezhovo locality: Paleontologischeskii Zhural, n. 4, p. 81-94.
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