Archaeopteryx and the Origin of Flight

  title={Archaeopteryx and the Origin of Flight},
  author={John Harold Ostrom},
  journal={The Quarterly Review of Biology},
  pages={27 - 47}
  • J. H. Ostrom
  • Published 1 March 1974
  • Biology
  • The Quarterly Review of Biology
Reexamination of the specimens of Archaeopteryx, which constitute the only direct evidence pertaining to the habits and mode of life of the earliest stages of avian evolution, indicates that neither the highly favored arboreal theory nor the much critized cursorial theory offers adequate explanation for the origin of avian flight. The osteology of Archaeopteryx, in virtually every detail, is indistinguishable from that of contempraneous and succeeding coelurosaurian dinosaurs-especially in the… 

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