The holotype specimen of the Late Triassic dinosauriform Caseosaurus crosbyensis is
redescribed and evaluated phylogenetically for the first time, providing new anatomical …

Triassic beds from Argentina and Brazil provide the most relevant fossil record of early
dinosauriforms in terms of numerical abundance and taxonomic diversity. This record …

The oldest unequivocal records of Dinosauria were unearthed from Late Triassic rocks
(approximately 230 Ma) accumulated over extensional rift basins in southwestern Pangea …

It was traditionally thought that the oldest known dinosaur assemblages were not diverse,
and that their early diversification and numerical dominance over other tetrapods occurred …

A new discovery of skeletons of Revueltosaurus callenderi from the Upper Triassic Chinle
Formation of Petrified Forest National Park, Arizona clearly shows that Revueltosaurus is not …

18.2. The early dinosaur Herrerasaurus ischigualastensis from the Ischigualasto Formation
of Argentina. A, Skeleton in side view; B, skull in side view; C, left hand viewed from above; …

The systematic position of the unusual Late Jurassic dinosaur Chilesaurus diegosaurezi
remains an area of real uncertainty. Originally thought to be an unusual theropod …

Early Cretaceous sauropods were among the first dinosaurs discovered in North America,
but several aspects of their taxonomy and evolution remain poorly understood. Much of this …

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 …

The holotypic materials of the sauropod 'Morosaurus' agilis—a partial skull, proatlases, and
first three cervical vertebrae—have been a taxonomic and phylogenetic mystery since their …