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    Home»Science»200 million year-old jawbone revealed as new species
    Science

    200 million year-old jawbone revealed as new species

    By Olivia CarterJuly 7, 2025No Comments3 Mins Read0 Views
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    200 million year-old jawbone revealed as new species
    The new pterosaur has been named Eotephradactylus mcintireae, meaning 'ash-winged dawn goddess'
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    Victoria Gill

    Science correspondent, BBC News

    Smithsonian

    The new pterosaur has been named Eotephradactylus mcintireae, meaning ‘ash-winged dawn goddess’

    Scientists have discovered a new species of pterosaur – a flying reptile that soared above the dinosaurs more than 200 million years ago.

    The jawbone of the ancient reptile was unearthed in Arizona back in 2011, but modern scanning techniques have now revealed details showing that it belongs to a species new to science.

    The research team, led by scientists at the Smithsonian’s National Museum of Natural History in Washington DC, has named the creature Eotephradactylus mcintireae, meaning “ash-winged dawn goddess”.

    It is a reference to the volcanic ash that helped preserve its bones in an ancient riverbed.

    Suzanne McIntire

    The jawbone of the seagull-sized pterosaur was preserved in 209 million year-old rock

    Details of the discovery are published in the journal Proceedings of the National Academy of Sciences.

    At about 209 million years old, this is now believed to be the earliest pterosaur to be found in North America.

    “The bones of Triassic pterosaurs are small, thin, and often hollow, so they get destroyed before they get fossilised,” explained Dr Kligman.

    The site of this discovery is a fossil bed in a desert landscape of ancient rock in the Petrified Forest National Park.

    More than 200 million years ago, this place was a riverbed, and layers of sediment gradually trapped and preserved bones, scales and other evidence of life at the time.

    The river ran through the central region of what was the supercontinent of Pangaea, which was formed from all of Earth’s landmasses.

    The pterosaur jaw is just one part of a collection of fossils found at the same site, including bones, teeth, fish scales and even fossilised poo (also known as coprolites).

    Dr Kligman said: “Our ability to recognise pterosaur bones in [these ancient] river deposits suggests there may be other similar deposits from Triassic rocks around the world that may also preserve pterosaur bones.”

    Ben Kligman

    The ancient bone bed is in the Petrified Forest National Park, Arizona

    Studying the pterosaur’s teeth also provided clues about what the seagull-sized winged reptile would have eaten.

    “They have an unusually high degree of wear at their tips,” explained Dr Kligman. suggesting that this pterosaur was feeding on something with hard body parts.”

    The most likely prey, he told BBC News, were primitive fish that would have been covered in an armour of boney scales.

    Scientists say the site of the discovery has preserved a “snapshot” of an ecosystem where groups of animals that are now extinct, including giant amphibians and ancient armoured crocodile relatives, lived alongside animals that we could recognise today, including frogs and turtles.

    This fossil bed, Dr Kligman said, has preserved evidence of an evolutionary “transition” 200 million years ago.

    “We see groups that thrived later living alongside older animals that [didn’t] make it past the Triassic.

    “Fossil beds like these enable us to establish that all of these animals actually lived together.”

    jawbone Million revealed species yearold
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    Olivia Carter
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    Olivia Carter is a staff writer at Verda Post, covering human interest stories, lifestyle features, and community news. Her storytelling captures the voices and issues that shape everyday life.

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