Cranial osteology of the theropod dinosaur Incisivosaurus gauthieri (Theropoda, Oviraptorosauria). (American Museum novitates, no. 3651)

Simple item page
dc.contributor.authorBalanoff, Amy M.
dc.contributor.authorXu, Xing, 1969-
dc.contributor.authorKobayashi, Yoshimura.
dc.contributor.authorMatsufune, Yusuke.
dc.contributor.authorNorell, Mark.
dc.date.accessioned2009-01-15T20:24:23Z
dc.date.available2009
dc.date.issued2009
dc.description35 p. : ill., 1 map ; 26 cm. "June 25, 2009." Includes bibliographical references (p. 32-35).en
dc.description.abstractWe provide a description of the holotype skull of the unusual oviraptorosaur Incisivosaurus gauthieri. Previous phylogenetic analyses have placed this taxon firmly within Oviraptorosauria near the base of the clade; however, until now only a cursory description of this important specimen was available. The presence of many primitive characteristics (e.g., maxillary and dentary teeth as well as an extended palate and rostrum) indicates that the observed similarities between avians and derived oviraptorids are convergences rather than shared derived characters. In addition, we clarify previous descriptions of several ambiguous anatomical features, most notably of the palate. We also employ computed tomographic (CT) analysis, which allows for a more complete description of the braincase and the reconstruction of an endocranial endocast. CT imagery reveals features that were before unobtainable, such as the presence of a replacement tooth behind the large rodentiform incisor in the premaxilla. This arrangement indicates that although the incisiform teeth of I. gauthieri are morphologically distinct they are replaced in typical archosaurian fashion.en
dc.description.sponsorshipAmerican Museum of Natural History.en
dc.format.extent14997687 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5970
dc.language.isoen_USen
dc.relation.ispartofseriesAmerican Museum novitates, no. 3651.en
dc.subjectIncisivosaurus gauthieri.en
dc.subjectSkull.en
dc.subjectOviraptorosauria.en
dc.subjectChina.en
dc.subjectBeipiao Shi Region.en
dc.subjectLiaoning Sheng.en
dc.titleCranial osteology of the theropod dinosaur Incisivosaurus gauthieri (Theropoda, Oviraptorosauria). (American Museum novitates, no. 3651)en
dc.title.alternativeIncisivosaurus gauthieri osteology.en

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
3651rev.pdf
Size:
14.3 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

American Museum Novitates