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†Yatsengina Semichatov 1936
urn:lsid:organismnames.com:name:3158657
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†Yatsengina Semichatov 1936
Semichatov 1936. Contributions to the stratigraphy of the middle carboniferous of the European part of U.S.S.R. Bulletin de la Societe des Naturalistes de Moscou Geol, 44 1936: pp. 191-224