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Ascent of Dinosaurs Linked to an Iridium Anomaly at the Triassic-Jurassic Boundary
Analysis of tetrapod footprints and skeletal material from more than 70 localities in eastern North America shows that large theropod dinosaurs appeared less than 10,000 years after the Triassic-Jurassic boundary, marking the establishment of dinosaur-dominated communities that prevailed for the next 135 million years. Expand
Abstract The holotype of Irritator challengeri Martill et al., 1996 from the Romualdo Member of the Santana Formation (Lower Cretaceous) in northeastern Brazil represents the most complete skull of aExpand
Early Cretaceous Dinosaurs from the Sahara
The discovery of dinosaurian skeletons from Lower Cretaceous beds in the southern Sahara shows that several lineages of tetanuran theropods and broad-toothed sauropods had a cosmopolitan distribution across Pangaea before the onset of continental fragmentation. Expand
On Chirostenotes, a Late Cretaceous oviraptorosaur (Dinosauria: Theropoda) from western North America
ABSTRACT A previously unrecognized partial skeleton of Chirostenotes pergracilis Gilmore, 1924 from the Upper Cretaceous Horseshoe Canyon Formation of Alberta (Canada) includes parts of the skull,Expand
Redescription and phylogenetic relationships of Doswellia kaltenbachi (Diapsida: Archosauriformes) from the Upper Triassic of Virginia
Results include a sister-group relationship between Doswellia and proterochampsids, placement of Qianosuchus as a crurotarsan archosaur, and Yonghesuchus and Turfanosuchu as successive sister taxa to Archosauria. Expand
Anatomy and phylogenetic relationships of Chimaerasuchus paradoxus, an unusual crocodyliform reptile from the Lower Cretaceous of Hubei, China
Phylogenetic analysis indicates a sister-group relationship between Chimaerasuchus and Notosuchus, and between that clade and an as yet unnamed notosuchid from the Lower Cretaceous of Malawi, which casts further doubts on previous claims concerning the endemic distribution of the NotOSuchidae and other “Gondwanan” tetrapod taxa during the Cret Jurassic. Expand
Cranial osteology and phylogenetic relationships of Hamadasuchus rebouli (Crocodyliformes: Mesoeucrocodylia) from the Cretaceous of Morocco
A detailed description of the skull and part of the mandible of the crocodyliform reptile Hamadasuchus rebouli from the Kem Kem beds of south-eastern Morocco is presented, lending further support to the biogeographical hypothesis that faunal connections existed between Africa and South America well into mid-Cretaceous times. Expand
Sichuanosuchus shuhanensis, a new ?early Cretaceous protosuchian (Archosauria: Crocodyliformes) from Sichuan (China), and the monophyly of Protosuchia
ABSTRACT A new protosuchian, Sichuanosuchus shuhanensis, sp. nov. from the ?Lower Cretaceous of Sichuan (China), is distinguished from other known basal crocodyliform archosaurs primarily by theExpand
A New Suchian Archosaur From The Upper Triassic Of North Carolina
Abstract A partial but largely articulated skeleton of a ‘rauisuchian’ archosaur from Late Upper Triassic strata of the Durham sub-basin, Deep River basin, Newark Supergroup, North Carolina,Expand