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Cockerell, T. D. A. (1924). Fossils in the Ondai Sair Formation, Mongolia. Bulletin of the American Museum of Natural History. 51(6): 129-144.
Cockerell, T. D. A. (1924). Fossils in the Ondai Sair Formation, Mongolia. Bulletin of the American Museum of Natural History. 51(6): 129-144.
