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The Osteology of Chubutisaurus insignis Del Corro, 1975 (Dinosauria: Neosauropoda) from the ‘Middle’ Cretaceous of Central Patagonia, Argentina
The phylogenetic analysis presented here resolves Chubutisaurus as the most basal somphospondylian. Expand
A new giant titanosaur sheds light on body mass evolution among sauropod dinosaurs
A new giant titanosaur is described, which represents the largest species described so far and one of the most complete titanosaurs, and its inclusion in an extended phylogenetic analysis and the optimization of body mass reveals the presence of an endemic clade of giant titanosaurs inhabited Patagonia between the Albian and the Santonian. Expand
Juvenile specimen of Megaraptor (Dinosauria, Theropoda) sheds light about tyrannosauroid radiation
Megaraptorids are a group of predatory dinosaurs that inhabited Gondwana from Cenomanian to Santonian times (Late Cretaceous). Phylogenetic relationships of megaraptorids have been matter of recentExpand
A New Sauropodomorph Dinosaur from the Early Jurassic of Patagonia and the Origin and Evolution of the Sauropod-type Sacrum
The dental and postcranial anatomy of Leonerasaurus supports its close affinities with basal sauropods, and shows that the characteristic sauropod body plan evolved gradually, with a step-wise pattern of character appearance. Expand
Extreme postcranial pneumaticity in sauropod dinosaurs from South America
Birds are unique among living tetrapods in possessing pneumaticity of the postcranial skeleton, with invasion of bone by the lung and air-sac system. Postcranial skeletal pneumaticity (PSP) has beenExpand
Bone Histology of Phytosaur, Aetosaur, and Other Archosauriform Osteoderms (Eureptilia, Archosauromorpha)
Bone microstructures are more uniform in phytosaur osteoderms and show a higher level of disparity among aetosaur fractures, and at least in the latter, histological features are potentially apomorphic for species/genus level. Expand
The first record of a sauropod dinosaur from Antarctica
This report reports the first record of a sauropod dinosaur from Antarctica, represented by an incomplete caudal vertebra from the Late Cretaceous of James Ross Island, which indicates that advanced titanosaurs achieved a global distribution at least by the LateCretaceous. Expand
Histological evidence for a supraspinous ligament in sauropod dinosaurs
The formation of this structure appears to have been a non-pathological metaplastic ossification, possibly induced by the continuous tensile forces applied to the element. Expand
Postcranial osteology of a new specimen of Buitreraptor gonzalezorum (Theropoda, Unenlagiidae)
The aim of the present contribution is to make a detailed anatomical description of the postcranial skeleton of a newly discovered Buitreraptor gonzalezorum specimen, which sheds light on anatomical elements and allows recognition of new autapomorphies, as well as possible synapomorphicies of the clade Unenlagiidae. Expand
Gastroliths in An Ornithopod Dinosaur
This is the first unambiguous record of gastroliths in an ornithopod dinosaur, and it is suggested that they were ingested as a result of lithophagy rather than accidental swallowing. Expand