Enigmatic dinosaur precursors bridge the gap to the origin of Pterosauria

  title={Enigmatic dinosaur precursors bridge the gap to the origin of Pterosauria},
  author={Mart{\'i}n Daniel Ezcurra and Sterling J. Nesbitt and Mario Bronzati and Fabio Marco Dalla Vecchia and Federico L. Agnolin and Roger B. J. Benson and Federico Briss{\'o}n Egli and S{\'e}rgio Furtado Cabreira and Serjoscha W. Evers and Adriel R. Gentil and Randall B. Irmis and Agustín G. Martinelli and Fernando E Novas and L{\'u}cio Roberto da Silva and Nathan D Smith and Michelle R. Stocker and Alan H. Turner and Max Cardoso Langer},
Pterosaurs were the first vertebrates to evolve powered flight 1 and comprised one of the main evolutionary radiations in terrestrial ecosystems of the Mesozoic era (approximately 252–66 million years ago), but their origin has remained an unresolved enigma in palaeontology since the nineteenth century 2 – 4 . These flying reptiles have been hypothesized to be the close relatives of a wide variety of reptilian clades, including dinosaur relatives 2 – 8 , and there is still a major morphological… 

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