Contrtbutions from the Museum of Paleontology
نویسنده
چکیده
Study of a previously unidentified dinosaur basicranium shows that it belongs to Triceratops sp., probably Triceratops horridus. The occipital condyle can be used to predict body size and skull size in extant reptiles, as illustrated here by study of Basiliscus vittatus and Alligator mississippiensis. Occipital condyle size is now known for 35 Triceratops specimens, and these can also be used to predict body and skull size. Comparison based on the size of the occipital condyle shows that there is no significant increase in size of Triceratops with increasing latitude. Previously postulated allocations of Triceratops specimens to sex or species groupings involve no significant differences in size. Finally, variability of occipital condyle size in Triceratops is no greater than that observed in growth series of adults of other species.
منابع مشابه
A forty-seven-million-year-old primate Darwinius masillae from the middle Eocene of Messel in Germany is worthy of attention
Museum of Paleontology and Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA b Senckenberg Forschungsinstitut und Naturmuseum, Senckenberganlage 25, D-60325 Frankfurt, Germany Naturhistorisches Museum, Augustinergasse 2, CH-4001 Basel, Switzerland Naturhistorisk Museum, Universitetet i Oslo, Postboks 1172, Blindern, N-0318 Oslo, Norway Museum of Anthropol...
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