Project 2705: F. A. Gianechini,P. J. Makovicky,S. Apesteguía. 2017. The cranial osteology of Buitreraptor gonzalezorum Makovicky, ApesteguÍa, and AgnolÍn, 2005 (Theropoda, Dromaeosauridae), from the Late Cretaceous of Patagonia, Argentina. Journal of Vertebrate Paleontology. 37 (1):e1255639.
Specimen: † Buitreraptor gonzalezorum (unvouchered)
View: skeleton

Abstract

Buitreraptor gonzalezorum is a paravian theropod from the Late Cretaceous of Patagonia that has been recovered as an unenlagiine dromaeosaurid in several phylogenies. It was preliminarily described in a brief article, but a detailed osteology has not been published to date. Here we provide a thorough osteological description of the skull of the holotype, which preserves the maxillae, nasals, frontals, parietals, postorbitals, quadrates, and many mandibular bones, together with some in situ and isolated teeth. The isolated occipital condyle is the only element preserved from the braincase. Diagnostic cranial characters of this taxon include elongate skull; maxillary fenestra not dorsally displaced; posteriorly expanded postantral wall; quadrate with expanded lateral flange and a posterior pneumatic foramen; straight anterior border of the supratemporal fossa; nutrient foramina within a well-marked lateral groove on the dentary; and small, fluted teeth without denticles. Buitreraptor shares traits with Austroraptor cabazai, the only other unenlagiine to preserve cranial remains, although they also differ in the morphology of the maxillary fenestra and the presence/absence of interdental plates. A phylogenetic analysis was performed, recovering Buitreraptor as an unenlagiine dromaeosaurid, in agreement with previous works. The phylogenetic implications of some characters are discussed, including characters not previously considered for this taxon, such as the presence of the mylohyoid foramen. The distribution and codings of some characters are reconsidered, with an evaluation of how they influence the phylogenetic position of Buitreraptor and paravian relationships overall.


Read the article »

Article DOI: https://doi.org/10.1080/02724634.2017.1255639

Project DOI: 10.7934/P2705, http://dx.doi.org/10.7934/P2705
This project contains
  • 2 Media
  • 2 Documents
  • 3 Taxa
  • 2 Specimens
Total size of project's media files: 3 MB

Download Project SDD File
Currently Viewing:
MorphoBank Project 2705
  • Creation Date:
    09 June 2017
  • Publication Date:
    09 June 2017
  • Project views: 3013

    This research
    supported by



    Members

    member name taxa specimens media
    MorphoBank Curator
    Project Administrator
    Last logged in 06/09/17
    322


    Project has no matrices defined.



    Project views

    type number of views Individual items viewed (where applicable)
    Total project views3013
    Project overview407
    Documents list250
    Media views896Media search (646 views); M451595 (129 views); M451596 (121 views);
    Specimen list441
    Taxon list562
    Bibliography193
    Views for media list264




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project46
    Project downloads45
    Document downloads1Character list (1 download);