Patricia Vickers-Rich and Thomas H. Rich, The Great Russian Dinosaurs, Guntar Graphics, 1993
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Everett C. Olson, 1962, Late Permian terrestrial vertebrates, USA and USSR Transactions of the American Philosophical Society, new series, 52: 1–224.
Ochyor |
Important highway runs through Krasnokamsk and connects Perm, Ochyor, and Igra (in the Udmurt Republic).