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New Species of 'Mystery' Dinosaur Unveiled at the Natural History Museum

  • The newly identified dinosaur species Enigmacursor mollyborthwickae went on permanent display on June 26, 2025, at London's Natural History Museum Earth Hall.
  • Researchers Susannah Maidment and Paul Barrett discovered the specimen between 2021 and 2022 in the Morrison Formation, a well-studied Late Jurassic site in the western US known for large dinosaur fossils.
  • Enigmacursor was a small, two-legged herbivore roughly one meter long with long limbs and small forearms likely used to bring food to its mouth, and it probably lived alongside giants like Diplodocus and Stegosaurus.
  • Maidment noted the specimen was probably a teenager, possibly sexually mature but not fully grown yet, while David Norman described Enigmacursor as a rare small dinosaur in the lower food chain of its era.
  • The discovery enhances understanding of early herbivorous dinosaur evolution and suggests many smaller dinosaur species likely remain undiscovered in the Morrison Formation despite past focus on larger dinosaurs.
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The Natural History Museum in London has unveiled the latest species of dinosaur to be officially identified: Enigmacursor mollyborthwickae, a small, plant-eating dinosaur the size of a dog that lived during the late Jurassic period, around 150 million years ago.

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NewScientist broke the news in Baltimore, United States on Tuesday, June 24, 2025.
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