New carnivorous dinosaur from the Late Cretaceous of NW Patagonia and the evolution of abelisaurid theropods

  title={New carnivorous dinosaur from the Late Cretaceous of NW Patagonia and the evolution of abelisaurid theropods},
  author={Juan Ignacio Canale and Carlos Agust{\'i}n Scanferla and Federico Agnol{\'i}n and Fernando E. Novas},
A nearly complete skeleton of the new abelisaurid Skorpiovenator bustingorryi is reported here. The holotype was found in Late Cenomanian–Early Turonian outcrops of NW Patagonia, Argentina. This new taxon is deeply nested within a new clade of South American abelisaurids, named Brachyrostra. Within brachyrostrans, the skull shortening and hyperossification of the skull roof appear to be correlated with a progressive enclosure of the orbit, a set of features possibly related to shock-absorbing… Expand
A new abelisaurid from the Huincul Formation (Cenomanian-Turonian; Upper Cretaceous) of Río Negro province, Argentina
Abstract The record of abelisaurids in South America, particularly Argentina is relatively abundant. However, abelisaurid diversity is far from being well-known. Huincul Formation has yielded diverseExpand
A new brachyrostran with hypertrophied axial structures reveals an unexpected radiation of latest Cretaceous abelisaurids
Abstract A well preserved skeleton of a new abelisaurid is reported here. The holotype of Viavenator exxoni was found in the outcrops of the Bajo de la Carpa Formation (Santonian, Upper Cretaceous),Expand
A new Abelisauroid from the Upper Cretaceous of Brazil
Although important dinosaur specimens have been recently described from Brazil, the theropod record in this county is still rather scarce, particularly from Cretaceous strata. Here we describe aExpand
A new abelisaurid dinosaur from the Late Cretaceous of southern France: Palaeobiogeographical implications
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An Early Cretaceous theropod dinosaur from Brazil sheds light on the cranial evolution of the Abelisauridae
Abelisaurid theropods dominated the predator role across Gondwana during the Late Cretaceous. Th ey are characterized by highly reduced forelimbs and one of the most specialized cranial morphologiesExpand
An abelisaurid (Dinosauria: Theropoda) ilium from the Upper Cretaceous (Cenomanian) of the Kem Kem beds, Morocco
A partially preserved ilium is added to a growing body of evidence that suggests abelisaurs might also have dominated Africa. Expand
New record of abelisauroid theropods from the Bauru Group (Upper Cretaceous), São Paulo State, Brazil
Isolated bones of abelisauroid theropods from the Bauru Group (Late Cretaceous, Brazil), are described. They correspond to three individuals represented by fused ischia and part of the ilium, aExpand
New theropod dinosaur from the Upper Cretaceous of Patagonia sheds light on the paravian radiation in Gondwana
A new paravian from the Cenomanian-Turonian (Late Cretaceous) of Río Negro province, NW Patagonia, Argentina is found that probably constitutes a previously unknown grade in the avian-line theropods in which some flight-related adaptations of the forelimbs are present in cursorial taxa. Expand
New brachyrostran remains (Theropoda, Abelisauridae) from La Invernada fossil site (Bajo de la Carpa Formation, Upper Cretaceous), northern Patagonia, Argentina
Abstract Several remains of an abelisaurid theropod including a nearly complete sacral complex articulated with both ilia, the distal boot of the pubes, the furcula, teeth, and fragments ofExpand
Noasaurid theropod (Abelisauria) femur from the Upper Cretaceous Bauru Group in Triângulo Mineiro (Southeastern Brazil)
Abstract A new record of noasaurid theropod (Dinosauria, Abelisauria) is here described and compared, including the description of its microstructure. It consists of an almost complete femur of smallExpand


On a theropod dinosaur (Abelisauria) from the continental Cretaceous of Brazil
A new theropod (Pycnonemosaurus nevesi gen.nov., sp.nov.) is described, based on five incomplete teeth, parts of seven caudal vertebrae, a right pubis (lacking the proximal part), a right tibia, andExpand
Predatory dinosaur remains from madagascar: implications for the cretaceous biogeography of gondwana
One specimen includes a nearly complete and exquisitely preserved skull with thickened pneumatic nasals, a median frontal horn, and a dorsal projection on the parietals of Abelisauridae. Expand
A large Cretaceous theropod from Patagonia, Argentina, and the evolution of carcharodontosaurids
It is suggested that carcharodontosaurid radiated in Gondwana sharing with spinosaurids the role of top-predators until their extinction in Cenomanian–Turonian times, and offers a better understanding of the evolution of Southern theropod faunas. Expand
Predatory Dinosaurs from the Sahara and Late Cretaceous Faunal Differentiation
Late Cretaceous (Cenomanian) fossils discovered in the Kem Kem region of Morocco include large predatory dinosaurs that inhabited Africa as it drifted into geographic isolation. One, represented by aExpand
An almost complete skull of a carnosaur from the Allen Formation (Maasqichtian of Rio Negro Province) is described as the holotype of A belisaurus comahuensis. It is a high skull with a broadExpand
Tetrapods from the Upper Cretaceous (Turonian–Maastrichtian) Bauru Group of Brazil: a reappraisal
An updated, annotated list of all tetrapods from the Adamantina, Uberaba and Marilia formations (Bauru Group), which constitute some of the best studied Upper Cretaceous units in Brazil, isExpand
New dinosaurs link southern landmasses in the Mid–Cretaceous
Fossils from three stratigraphic levels in the Cretaceous of Niger provide definitive evidence that abelisauroid dinosaurs and their immediate antecedents were also present on Africa and provide key evidence for continued faunal exchange among Gondwanan landmasses until the end of the Early Cret Jurassic. Expand
A new carcharodontosaurid (Dinosauria, Theropoda) from the Upper Cretaceous of Argentina
A new carcharodontosaurid theropod from the Huincul Formation (Aptian-Cenomanian, Upper Cretaceous) of Neuquen Province, Argentina, is described. Approximately the same size as GiganotosaurusExpand
The Gondwanian theropod families Abelisauridae and Noasauridae
The theropod families Abelisauridae and Noasauridae appear closely related because of shared derived characters such as the short anterior area of the maxilla, the small or absent preantorbitalExpand
ABSTRACT Recent fieldwork in Upper Cretaceous terrestrial deposits in northwestern Madagascar has yielded a remarkable diversity of vertebrates, including several specimens of the abelisauridExpand