A new Abelisauridae (Dinosauria : Theropoda) from northwest Patagonia

Calvo, JO; Rubilar-Rogers, D; Moreno K.

Abstract

A new theropod Abelisauridae is described, Ekrixinatosaurustinis novasi gen. et sp. nov., of northwestern Patagonia (Neuquén Province, Argentina). A preliminar cladistic analysis placed Ekrixinatosaurus together with Majungatholus and Carnotaurini; and the sister group is Ilokelesia. The presence of this specimen in Albian-Cenomarúan beds allows us to support the early divergence (pre-Senonian) of this clade, and the hypothesis of the presence of Abelisauridae in continental Africa. The present distribution of Abelisauridae indicates: 1) a vicariance of this clade based on a pre-Cenomanian pan-Gondwanic distribution; 2) dispersion throughout terrestrial bridges. In both cases, the absence of Abelisauridae in continental Africa can be considered a bias of the fossil record. © Asociación Paleontológica Argentina.

Más información

Título según WOS: A new Abelisauridae (Dinosauria : Theropoda) from northwest Patagonia
Título según SCOPUS: A new Abelisauridae (Dinosauria: Theropoda) from northwest Patagonia
Título de la Revista: AMEGHINIANA
Volumen: 41
Número: 4
Editorial: ASOCIACION PALEONTOLOGICA ARGENTINA
Fecha de publicación: 2004
Página de inicio: 555
Página final: 563
Idioma: English
Notas: ISI, SCOPUS