MACNBR   00242
MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
artículos
Título:
New carnivorous dinosaur from the Late Cretaceous of NW Patagonia and the evolution of abelisaurid theropods
Autor/es:
CANALE, JUAN IGNACIO; SCANFERLA, CARLOS AGUSTÍN; AGNOLÍN, FEDERICO LISANDRO; NOVAS, FERNANDO EMILIO
Revista:
NATURWISSENSCHAFTEN
Editorial:
Springer
Referencias:
Año: 2009 vol. 96 p. 409 - 409
ISSN:
0028-1042
Resumen:
Abstract A nearly complete skeleton of the new abelisaurid Skorpiovenator bustingorryi is here reported. 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.