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Morphology and histology of new cranial specimens of Pachycephalosauridae (Dinosauria: Ornithischia) from the Nemegt Formation, Mongolia
David C Evans, Shoji Hayashi, Kentaro Chiba, Mahito Watabe, Michael J Ryan, Yuong-Nam Lee, Philip J Currie, Khishigjav Tsogtbaatar, Rinchen Barsbold |