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

Early dinosaur evolution has been the subject of several phylogenetic studies and the
position of certain basal forms is currently debated. This is the case for the oldest known …

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 …

Juvenile sauropodomorph specimens from a Late Triassic/Early Jurassic fissure fill in Pant‐y‐
ffynnon Quarry, South Wales are redescribed and named as a new species …

We review the morphology and systematics of Lagosuchus from the Middle Triassic Los
Chañares Formation. Two species have been named, Lagosuchus talampayensis and L …

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 …

The South American Late Triassic offers the most comprehensive window to the early
radiation of dinosaurs. This is enhanced by the discovery of Sacisaurus agudoensis, a new …

The name Saurischia was coined by Seeley in lectures given in 1887, published in 1888, to
designate those dinosaurs possessing a propubic pelvis. This plesiomorphic feature …

Most recent studies of dinosaur phylogeny have concentrated on theropods and
ornithischians. As a result, the evolutionary relationships of sauropod dinosaurs are poorly …

▪ Abstract Phylogenetic studies and new fossil evidence have yielded fundamental insights
into the pattern and timing of dinosaur evolution and the emergence of functionally modern …