Deep faunistic turnovers preceded the rise of dinosaurs in southwestern Pangaea

@article{Ezcurra2017DeepFT,
  title={Deep faunistic turnovers preceded the rise of dinosaurs in southwestern Pangaea},
  author={Mart{\'i}n Daniel Ezcurra and Lucas E. Fiorelli and Agustín G. Martinelli and Sebasti{\'a}n Rocher and Mar{\'i}a Bel{\'e}n von Baczko and Miguel Ezpeleta and Jerem{\'i}as R. A. Taborda and E. Mart{\'i}n Hechenleitner and M. Jimena Trotteyn and Julia Brenda Desojo},
  journal={Nature Ecology \& Evolution},
  year={2017},
  volume={1},
  pages={1477-1483}
}
The Triassic period documents the origin and diversification of modern amniote lineages and the Late Triassic fossil record of South America has been crucial to shed light on these early evolutionary histories. However, the faunistic changes that led to the establishment of Late Triassic ecosystems are largely ignored because of the global scarcity of fossils from assemblages a few million years older. Here we contribute to fill this gap with the description of a new tetrapod assemblage from… 
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Palaeontological and dated stratigraphic evidence is synthesized to show that dinosaur diversification followed the Carnian Pluvial Episode 234–232 mya, a time when climates switched from arid to humid and back to arid again.
Increases in sampling support the southern Gondwanan hypothesis for the origin of dinosaurs
Dinosaurs were ubiquitous in terrestrial ecosystems through most of the Mesozoic and are still diversely represented in the modern fauna in the form of birds. Recent efforts to better understand the
Extinction and dawn of the modern world in the Carnian (Late Triassic)
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The oldest unequivocal records of Dinosauria were unearthed from Late Triassic rocks accumulated over extensional rift basins in southwestern Pangea, and the group achieved a nearly global distribution by the latest Triassic, especially with the radiation of saurischian groups such as “prosauropods” and coelophysoids.
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