Osteology and phylogenetic relationships of Tyrannotitan chubutensis Novas, de Valais, Vickers-Rich and Rich, 2005 (Theropoda: Carcharodontosauridae) from the Lower Cretaceous of Patagonia, Argentina

摘要: The theropod clade Carcharodontosauridae is a broadly distributed group of large allosauroid theropods. carcharodontosaurids recorded in the Albian–Cenomanian Gondwana are youngest and most derived members this clade. Tyrannotitan chubutensis, from Cerro Castano Member Barcino Formation (Albian; Chubut Group), Central Patagonia, Argentina, prime interest among Gondwanan as it represents oldest record group. Here we offer detailed osteological comparative description holotype paratype chubutensis together with new diagnosis species. information results better understanding taxon Carcharodontosauridae. Furthermore, study anatomy pectoral girdle Giganotosaurus reinterpreted very similar to that Mapusaurus. We also present phylogenetic analysis recovers carcharodontosaur...