The Triassic has long been recognized as a time during which marine and terrestrial
ecosystems modernized dramatically, and it seems to have been a two-step process. First …

Archosauria diversified throughout the Triassic Period before experiencing two mass
extinctions near its end∼ 201 Mya, leaving only the crocodile-lineage (Crocodylomorpha) …

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 vertebrate lineages that would shape Mesozoic and Cenozoic terrestrial ecosystems
originated across Triassic Pangaea,,,,,,,,,–. By the Late Triassic (Carnian stage,~ 235 million …

Although simulations have shown that implied weighting (IW) outperforms equal weighting
(EW) in phylogenetic parsimony analyses, weighting against homoplasy lacks extensive …

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 …

Pterosaurs, the first vertebrates to evolve powered flight, were key components of Mesozoic
terrestrial ecosystems from their sudden appearance in the Late Triassic until their demise at …

Ornithischians form a large clade of globally distributed Mesozoic dinosaurs, and represent
one of their three major radiations. Throughout their evolutionary history, exceeding 134 …

Resolving the evolutionary relationships of early diverging ('basal') ornithischian dinosaurs
is a challenging topic in palaeontology, with multiple competing hypotheses on the …

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