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free PDF: Candeiro 2010 on Aeolosaurus

Candeiro, C.R.A. (2010). Record of the genus Aeolosaurus (Sauropoda,
Titanosauria) in the Late Cretaceous of South America: paleogeographic
implications. Estudios Geologicos [online], accepted manuscript, doi:
Published online: 03/12/2010


The Upper Cretaceous of South America has yielded fossils of the
Aeolosaurini titanosaurian Aeolosaurus from Argentina (from the Allen,
Los Alamitos, Angostura Colorada, and Bajo Barreal formations) and
Brazil (Adamantina and Marília formations). To date, four Aeolosaurus
species have been recognized: Aeolosaurus colhuehuapensis, Aeolosaurus
rionegrinus, A. rionegrinus? and Aeolosaurus sp. Gondwanatitan
faustoi, recently considered a junior synonym of Aeolosaurus, is here
demonstrated to be a valid taxon. The occurrence of Aeolosaurus in
Turonian-Santonian rocks of central Brazil and in
Campanian-Maastrichtian deposits of Argentina suggests that the
temporal and geographic distribution of aeolosaurines was greater than
previously recognized. The Aeolosaurus records from the Maastrichtian
Marília Formation of Brazil demonstrate that this genus persisted
after the marine incursion that occurred in northern Patagonia during
the Campanian-Maastrichtian. The Late Cretaceous tetrapod assemblages
of central Brazil and Patagonia are comparable in age and fossil

Key words: Aeolosaurus, Titanosauria, Sauropoda, paleobiogeography,
distribution, Late Cretaceous, South America, Brazil, Argentina.

Jose Ignacio Ruiz-Omenaca
Museo del Jurasico de Asturias (MUJA)
E-33328 Colunga, Spain