Primitive dinosaur skeleton from Argentina and the early evolution of Dinosauria

  title={Primitive dinosaur skeleton from Argentina and the early evolution of Dinosauria},
  author={P. Sereno and Catherine A. Forster and R. Rogers and Alfredo M. Monetta},
WE report here the discovery of a primitive dinosaur skeleton from Upper Triassic strata in northwestern Argentina. The 1-m-long skeleton represents a new taxon, Eoraptor lunensis gen. et sp. nov., which is close to the predicted structure and size of the common dinosaurian ancestor1–5. The skull, which has a unique heterodont dentition, does not exhibit any of the specializations of the major dinosaurian clades (Ornithischia, Sauropodomorpha, Theropoda). The forelimbs are less than half the… Expand
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