A ceratopsian dinosaur from China and the early evolution of Ceratopsia

Xing Xu (), Peter J. Makovicky, Xiao-lin Wang, Mark A. Norell and Hai-lu You
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Xing Xu: Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences
Peter J. Makovicky: The Field Museum
Xiao-lin Wang: Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences
Mark A. Norell: American Museum of Natural History
Hai-lu You: Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences

Nature, 2002, vol. 416, issue 6878, 314-317

Abstract: Abstract Ceratopsians (horned dinosaurs) represent one of the last and the most diverse radiations of non-avian dinosaurs1,2,3,4. Although recent systematic work unanimously supports a basal division of Ceratopsia into parrot-like psittacosaurids and frilled neoceratopsians, the early evolution of the group remains poorly understood, mainly owing to its incomplete early fossil record. Here we describe a primitive ceratopsian from China. Cladistic analysis posits this new species as the most basal neoceratopsian. This new taxon demonstrates that some neoceratopsian characters evolved in a more incremental fashion than previously known and also implies mosaic evolution of characters early in ceratopsian history.

Date: 2002
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DOI: 10.1038/416314a

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