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This Pterosaur Lived Over 200 Million Years Ago in Arizona and Was the Size of a Seagull

Learn more about Eotephradactylus mcintireae, the oldest Late Triassic Pterosaur in North America that was about the size of sea gull.

ByRosie McCall
The newly described pterosaur Eotephradactylus mcintireae is seen eating an ancient ray-finned fish alongside an early species of turtle and an early frog species, with the skeleton of an armored crocodile relative lying on the ground and a palm-like plant growing in the background. (Image Credit: Brian Engh) Brian Engh

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North America’s oldest known pterosaur — a creature roughly the size of a modern-day gull — would have glided over the tropical forests and braided rivers of equatorial Pangea, likely dining on fish and mingling with six-foot amphibians.

This ancient flying reptile has been named Eotephradactylus mcintireae, meaning “ash-winged dawn goddess” — a reference to its place near the base of the pterosaur’s family tree. The species was described in Proceedings of the National Academy of Sciences following the discovery of a fossilized jawbone buried within the volcanic ash of Petrified Forest National Park, Arizona.

Pterosaurs were a clade of flying reptiles that appeared in the Late Triassic Period. They were the first vertebrates known to have evolved powered flight and would have commanded the skies tens of millions of years before birds. These winged beasts lived alongside the likes of the tyrannosaurus and triceratops, but (unlike birds) were not ...

  • Rosie McCall

    Rosie is a freelance writer living in London. She has covered science and health topics for publications, including IFLScience, Newsweek, and Health.

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