Naturwissenschaften

, 96:409

New carnivorous dinosaur from the Late Cretaceous of NW Patagonia and the evolution of abelisaurid theropods

  • Juan I. Canale
  • Carlos A. Scanferla
  • Federico L. Agnolin
  • Fernando E. Novas
Short Communication

DOI: 10.1007/s00114-008-0487-4

Cite this article as:
Canale, J.I., Scanferla, C.A., Agnolin, F.L. et al. Naturwissenschaften (2009) 96: 409. doi:10.1007/s00114-008-0487-4

Abstract

A nearly complete skeleton of the new abelisaurid Skorpiovenator bustingorryi is reported here. The holotype was found in Late Cenomanian–Early Turonian outcrops of NW Patagonia, Argentina. This new taxon is deeply nested within a new clade of South American abelisaurids, named Brachyrostra. Within brachyrostrans, the skull shortening and hyperossification of the skull roof appear to be correlated with a progressive enclosure of the orbit, a set of features possibly related to shock-absorbing capabilities. Moreover, the development of horn-like structures and differential cranial thickening appear to be convergently acquired within Abelisauridae. Based on the similarities between Skorpiovenator and carcharodontosaurid tooth morphology, we suggest that isolated teeth originally referred as post-Cenomanian Carcharodontosauridae most probably belong to abelisaurids.

Keywords

PatagoniaCretaceousTheropodaAbelisauridae

Supplementary material

114_2008_487_MOESM1_ESM.doc (78 kb)
Supplementary S1(DOC 78.5 KB)

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Juan I. Canale
    • 1
    • 2
  • Carlos A. Scanferla
    • 1
    • 3
  • Federico L. Agnolin
    • 3
    • 4
  • Fernando E. Novas
    • 1
    • 3
  1. 1.CONICET, Consejo Nacional de Investigaciones Científicas y TécnicasBuenos AiresArgentina
  2. 2.Museo Municipal “Ernesto Bachmann”NeuquénArgentina
  3. 3.Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”Buenos AiresArgentina
  4. 4.Área Paleontología. Fundación de Historia Natural “Félix de Azara”, Departamento de Ciencias Naturales y AntropologíaCEBBAD—Universidad MaimónidesBuenos AiresArgentina