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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 <bchoo@museum.vic.gov.au>:
> 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.
> http://rspb.royalsocietypublishing.org/content/early/2012/05/17/rspb.2012.0660.abstract
> Cheers
> Brian
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