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

Dinosaurs were remarkably successful during the Mesozoic and one subgroup, birds,
remain an important component of modern ecosystems. Although the extinction of non-avian …

The early evolution of archosauromorphs during the Permo-Triassic constitutes an excellent
empirical case study to shed light on evolutionary radiations in deep time and the timing and …

Archosaurs have a 250 million year record that originated shortly after the Permian-Triassic
extinction event and is continued today by two extant clades, the crocodylians and the …

Abstract Triassic dinosaurs from South Brazil are considered as some of the oldest known
worldwide, but their precise correlation to other early dinosaur occurrences have proven …

Tetanuran theropods represent the majority of Mesozoic predatory dinosaur diversity and
the lineage leading to extant Aves. Thus their history is relevant to understanding the …

Dinosauromorpha includes dinosaurs and other much less diverse dinosaur precursors of
Triassic age, such as lagerpetids [1]. Joint occurrences of these taxa with dinosaurs are rare …

Dinosaurs and pterosaurs have remarkable diversity and disparity through most of the
Mesozoic Era,–. Soon after their origins, these reptiles diversified into a number of long-lived …

The relationship between dinosaurs and other reptiles is well established,,,, but the
sequence of acquisition of dinosaurian features has been obscured by the scarcity of fossils …

Upper Triassic rocks in northwestern Argentina preserve the most complete record of
dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a …