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Re: Eoabelisaurus - almost complete Aalenian-Bajocian abelisaurid.
i would be very interested in the paper. If somebody could share it,
that would be marvelous!
2012/5/23 Choo, Brian <firstname.lastname@example.org>:
> Diego Pol & Oliver W. M. Rauhut (2012) A Middle Jurassic abelisaurid from
> Patagonia and the early diversification of theropod dinosaurs. Proc. R. Soc.
> B rspb20120660; published ahead of print May 23, 2012, 1471-2954
> Abstract = Abelisaurids are a clade of large, bizarre predatory dinosaurs,
> most notable for their high, short skulls and extremely reduced forelimbs.
> They were common in Gondwana during the Cretaceous, but exceedingly rare in
> the Northern Hemisphere. The oldest definitive abelisaurids so far come from
> the late Early Cretaceous of South America and Africa, and the early
> evolutionary history of the clade is still poorly known. Here, we report a
> new abelisaurid from the Middle Jurassic of Patagonia, Eoabelisaurus mefi
> gen. et sp. nov., which predates the so far oldest known secure member of
> this lineage by more than 40 Myr. The almost complete skeleton reveals the
> earliest evolutionary stages of the distinctive features of abelisaurids,
> such as the modification of the forelimb, which started with a reduction of
> the distal elements. The find underlines the explosive radiation of theropod
> dinosaurs in the Middle Jurassic and indicates an unexpected diversity of
> ceratosaurs at that time. The apparent endemism of abelisauroids to southern
> Gondwana during Pangean times might be due to the presence of a large,
> central Gondwanan desert. This indicates that, apart from continent-scale
> geography, aspects such as regional geography and climate are important to
> reconstruct the biogeographical history of Mesozoic vertebrates.
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