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  1. By: Haas, Georg,
    Publication info: New York, N.Y, American Museum of Natural History, [1955]
    Holding Institution: American Museum of Natural History Library
    Subjects: 56.81,9C:14.71,6  Anatomy  Ceratopsidae  Jaws  Masticatory muscles  Muscles  Protoceratops  
  2. By: Makovicky, Peter J. - Norell, Mark A.
    Publication info: New York, NY American Museum of Natural History c2006
    Holding Institution: American Museum of Natural History Library
    Subjects: Ceratopsidae  Cretaceous  Dinosaurs  Dornogovʹ Aĭmag  Evolution  Mongolia  Paleontology  Phylogeny  Reptiles, Fossil  Yamaceratops dorngobiensis