Dinosaurian precursors from the Middle Triassic of Argentina: Lagerpeton chanarensis

  title={Dinosaurian precursors from the Middle Triassic of Argentina: Lagerpeton chanarensis},
  author={Paul C. Sereno and A. Arcucci},
  journal={Journal of Vertebrate Paleontology},
  • P. SerenoA. Arcucci
  • Published 14 January 1994
  • Geography, Environmental Science
  • Journal of Vertebrate Paleontology
ABSTRACT We describe the holotype and referred material of the unusual Middle Triassic dinosaur precursor, Lagerpeton chanarensis. The autapomorphies of Lagerpeton chanarensis include the convex and fluted puboischial flange, hook-shaped femoral head, elongate femoral fourth trochanter, fused astragalocalcaneum, tall posterior ascending process on the astragalus, and functionally didactyl pes. Among ornithodirans, Lagerpeton chanarensis is more closely related to dinosaurs than are pterosaurs… 

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