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 …

Predatory dinosaurs were an important ecological component of terrestrial Mesozoic
ecosystems. Though theropod dinosaurs carried this role during the Jurassic and …

Sauropodomorpha is the first major dinosaurian group that radiated during the Triassic.
During this time the group underwent major changes in body plan, including the acquisition …

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 …

Characterizing the evolutionary history of early dinosaurs is central to understanding their
rise and diversification in the Late Triassic. However, fossils from basal lineages are rare. A …

The rise of sauropodomorphs is still poorly understood due to the scarcity of well-preserved
fossils in early Norian rocks. Here, we present an association of complete and exceptionally …

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

Tyrannosauroids—the group of carnivores including Tyrannosaurs rex—are some of the
most familiar dinosaurs of all. A surge of recent discoveries has helped clarify some aspects …

The dinosaur record of the Santa Maria beds of Rio Grande do Sul (Mid–Late Triassic; south
Brazil) includes the herrerasaur Staurikosaurus pricei, and two basal members of the …

The colossal size and body plan of sauropod dinosaurs are unparalleled in terrestrial
vertebrates. However, to date, there have been only limited attempts to examine temporal …