Once known solely from dental material and thought to represent an early ornithischian
dinosaur, the early‐diverging pseudosuchian Revueltosaurus callenderi is described from a …

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 origin and evolutionary relationships of ornithischian dinosaurs are topics that have
undergone a series of substantial revisions. At present there are several competing …

Living amphibians (Lissamphibia) include frogs and salamanders (Batrachia) and the
limbless worm-like caecilians (Gymnophiona). The estimated Palaeozoic era gymnophionan …

Well-sampled dinosaur communities from the Jurassic through the early Late Cretaceous
show greater taxonomic diversity among larger (> 50 kg) theropod taxa than communities of …

Understanding the evolution of the earliest avemetatarsalian (bird-line) archosaurs and
inferring the morphology of the last common ancestor of Archosauria are hampered by a …

The earliest dinosaurs (theropods and sauropodomorphs) are found in fossiliferous early
Late Triassic strata dated to about 230 million years ago (Ma), mainly in northwestern …

Abstract The Carnian (Upper Triassic) rocks of the Candelária Sequence present a rich
record of dinosaurs, including some of the oldest known dinosaurs worldwide. In this …

A vast array of pseudosuchian body plans evolved during the diversification of the group in
the Triassic Period, but few can compare to the toothless, long‐necked, and bipedal …

Non-archosaur archosauromorphs are a paraphyletic group of diapsid reptiles that were
important members of global Middle and Late Triassic continental ecosystems. Included in …