A pterosaur is a member of an extinct group of flying archosaurs. Its wing membrane was supported chiefly by an elongated fourth finger. That construction differs from the feathered wing of a bird and the multi-digit membrane support of a bat.

Ancestors (11)

  1. Archosauria
  2. Diapsida
  3. Sauropsida
  4. Amniote
  5. Tetrapod
  6. Vertebrate
  7. Animal
  8. Eukaryote
  9. Organism
  10. Biology
  11. Home

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