Cranial bones and atlas of titanosaurs (Dinosauria,Sauropoda) from Late Cretaceous (Bauru Group) of Uberaba,Minas Gerais State,Brazil |
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| Institution: | 1. Department of Earth Sciences, Uppsala University, Uppsala, Sweden;2. Australian Age of Dinosaurs Museum of Natural History, The Jump-Up, Winton, Queensland, Australia;3. Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, United Kingdom;4. Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom;5. Geosciences, Queensland Museum, Hendra, Queensland, Australia |
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| Abstract: | Isolated left prefrontal, left squamosal and atlas of titanosaur dinosaurs are described and compared. They come from the Late Cretaceous Serra da Galga Member of the Marília Formation at the Serra do Veadinho region, Peirópolis (Uberaba County, Minas Gerais State, Brazil). Due to the sparse cranial elements of titanosaurs already known from Brazil, these specimens are noticeable to be presented. In addition, the atlas vertebra is described for the first time for Brazilian titanosaurs. The morphology of the cranial bones closely resembles lithostratian titanosaurs, such as Rapetosaurus, rather than basal titanosaurs. The atlas is similar to that of other titanosaurs, suggesting that the anatomy of this element seems to be more conservative than other vertebral elements, in which vertebral laminae play an important rule in titanosaur taxonomy. |
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| Keywords: | Titanosauria Lithostratia Peirópolis Prefrontal Squamosal |
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