What are Pterosaurs?

Nov. 26, 2024

Paleontologists have recently announced the discovery of a new species of quetzalcoatline azhdarchid pterosaur, Nipponopterus mifunensis, from the Late Cretaceous of Japan.

About Pterosaurs:

  • Pterosaurs were flying reptiles that flourished during Triassic, Jurassic, and Cretaceous periods of the Mesozoic Era(252.2 million to 66 million years ago). 
  • They were not only the first reptiles capable of flight, but also the first vertebrates to fly, a feat they accomplished by using strong forelegs to launch their bodies into the air.
  • Both Pterosaurs and Dinosaurs are archosaurs, or “ruling reptiles,” a group to which birds and crocodiles belong. 
  • It included the largest vertebrate ever known to fly: the late Cretaceous Quetzalcoatlus.
  • Features:
  • Pterosaurs are not closely related to either birds or bats and thus provide a classic example of convergent evolution.
  • Their wings were formed by a membrane of skin that was connected to the hand by an elongated fourth finger, not unlike the fleshy wings of bats.
  • Earlier species had long, fully-toothed jaws and long tails, while later forms had a highly reduced tail and some lacked teeth.
  • They often had long necks, which sometimes had throat pouchessimilar to pelicans' for catching fish.
  • They went extinct at the end of the Cretaceous period, around 65.5 million years ago, during the mass extinction known as the Cretaceous-Tertiary extinction event(K-T extinction event).
  • When they disappeared, their role as the dominant vertebrates in the skies was taken over by the birds, which are considered to be of dinosaur ancestry.

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