Yamaceratops dorngobiensis, a new primitive ceratopsian (Dinosauria, Ornithischia) from the Cretaceous of Mongolia ; American Museum novitates, no. 3530

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dc.contributor.author Makovicky, Peter J. en_US
dc.contributor.author Norell, Mark. en_US
dc.contributor.author Mongolian-American Museum Paleontological Project. en_US
dc.contributor.author Mongolyn Shinzhlçekh Ukhaany Akademi. en_US
dc.date.accessioned 2006-09-18T16:17:37Z
dc.date.available 2006-09-18T16:17:37Z
dc.date.issued 2006 en_US
dc.identifier.uri http://hdl.handle.net/2246/5808
dc.description 42 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 33-35). en_US
dc.description.abstract "A new basal neoceratopsian taxon from the eastern Gobi Desert is described. Yamaceratops dorngobiensis, tax. nov., is probably of late Early Cretaceous age, and occupies a phylogenetic position intermediate between Liaoceratops and Archaeoceratops. It is the most basal taxon to display a number of traditional neoceratopsian synapomorphies concentrated in the cheek region and mandible. These include presence of an epijugal, lateral displacement of the coronoid process, a lateral ridge on the surangular for insertion of the jaw adductors, and a lateral wall to the mandibular glenoid. Yamaceratops shares two synapomorphies (tubercles on the ventral edge of the angular and shape of the jugal) with Liaoceratops, indicating that the transient presence of derived characters may be prevalent in the early evolutionary history of Ceratopsia. Yamaceratops shares aspects of frill morphology with Liaoceratops and Leptoceratops that suggest a function unrelated to display for this anatomical structure in basal neoceratopsians, and hints at a more complex evolutionary history for ceratopsian frills. Considerations of patristic distances and mosaic evolution among basal neoceratopsian taxa indicate that a greater diversity of these animals remains undiscovered"--P. [1]. en_US
dc.format.extent 7307411 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, NY : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates, no. 3530 en_US
dc.subject.lcc QL1 .A436 no.3530, 2006 en_US
dc.subject.lcsh Yamaceratops dorngobiensis. en_US
dc.subject.lcsh Dinosaurs -- Mongolia -- Dornogov§ Aæimag. en_US
dc.subject.lcsh Reptiles, Fossil -- Mongolia -- Dornogov§ Aæimag. en_US
dc.subject.lcsh Paleontology -- Cretaceous -- Mongolia -- Dornogov§ Aæimag. en_US
dc.subject.lcsh Paleontology -- Mongolia -- Dornogov§ Aæimag. en_US
dc.subject.lcsh Ceratopsidae -- Phylogeny. en_US
dc.subject.lcsh Ceratopsidae -- Evolution. en_US
dc.title Yamaceratops dorngobiensis, a new primitive ceratopsian (Dinosauria, Ornithischia) from the Cretaceous of Mongolia ; American Museum novitates, no. 3530 en_US
dc.title.alternative New Mongolian neoceratopsian en_US
dc.type text en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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