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The Early Evolution of Archosaurs: Relationships and the Origin of Major Clades
TLDR
A time-calibrated phylogeny of Archosauriformes indicates that the origin and initial diversification of archosauria occurred during the Early Triassic following the Permian-Triassic extinction. Expand
A Late Triassic Dinosauromorph Assemblage from New Mexico and the Rise of Dinosaurs
TLDR
The transition between the first dinosaurs and more archaic faunas may have extended for 15 to 20 million years and was probably diachronous at different paleolatitudes. Expand
A Complete Skeleton of a Late Triassic Saurischian and the Early Evolution of Dinosaurs
TLDR
A new theropod dinosaur from New Mexico is a representative of the early North American diversification and reveals a mosaic of plesiomorphic and derived features that clarify early saurischian dinosaur evolution and provide evidence for the antiquity of novel avian character systems including skeletal pneumaticity. Expand
Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira
TLDR
The analysis suggests that the dentition and diet of silesaurids, ornithischians and sauropodomorphs evolved independently from a plesiomorphic carnivorous form, and Asilisaurus demonstrates the antiquity of both Ornithodira and the dinosaurian lineage. Expand
THE ANATOMY OF EFFIGIA OKEEFFEAE (ARCHOSAURIA, SUCHIA), THEROPOD-LIKE CONVERGENCE, AND THE DISTRIBUTION OF RELATED TAXA
TLDR
Effigia conclusively indicates that the skull of Shuvosaurus and the postcrania of “Chatterjeea” belong to the same taxon, and the close relationship between Shuvosaurs and Effigia indicates that both taxa are nested within the suchian clade and not within Ornithomimisauria. Expand
Osteology of the Middle Triassic pseudosuchian archosaur Arizonasaurus babbitti
Arizonasaurus babbitti is rediagnosed from a well-preserved partial skeleton from the early Middle Triassic Moenkopi Formation of northern Arizona. The skull, excluding the braincase, is describedExpand
Early ornithischian dinosaurs: the Triassic record
Abstract Ornithischian dinosaurs are one of the most taxonomically diverse dinosaur clades during the Mesozoic, yet their origin and early diversification remain virtually unknown. In recent years,Expand
A Jurassic ceratosaur from China helps clarify avian digital homologies
TLDR
A new basal Ceratosaur from the Oxfordian stage of the Jurassic period of China is reported, representing the first known Asian ceratosaur and the only known beaked, herbivorous Jurassic theropod, and possesses a strongly reduced manual digit I, documenting a complex pattern of digital reduction within the Theropoda. Expand
The Late Triassic pseudosuchian Revueltosaurus callenderi and its implications for the diversity of early ornithischian dinosaurs
TLDR
Dental characters previously used to place Revueltosaurus within the Ornithischia evolved convergently among other archosaur taxa, and cannot be used to diagnose ornithischian dinosaur teeth. Expand
A critical re‐evaluation of the Late Triassic dinosaur taxa of North America
Synopsis The North American Triassic dinosaur record has been repeatedly cited as one of the most complete early dinosaur assemblages. The discovery of Silesaurus from Poland and the recognition thatExpand
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