Paleontology

  1. illustration of Spinosaurus, a dinosaur with a large fin, hunting fish
    Paleontology

    Spinosaurus’ dense bones fuel debate over whether some dinosaurs could swim

    New evidence that Spinosaurus and its kin hunted underwater won't be the last word on whether some dinosaurs were swimmers.

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  2. illustration of bobcat-like ancient animal prowling in a forest
    Paleontology

    A new saber-toothed mammal was among the first hypercarnivores

    A 42-million-year-old jawbone with slicing teeth and a gap to fit saberlike teeth is pegged to a new species of the mysterious Machaeroidine group.

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  3. cephalopod fossil
    Paleontology

    Scientists are arguing over the identity of a fossilized 10-armed creature

    An ancient cephalopod fossil may be the oldest ancestor of octopuses, but the interpretation hinges on the identification of one feature.

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  4. illustration of a dinosaur fleeing a massive flood
    Paleontology

    The Age of Dinosaurs may have ended in springtime

    Fossilized fish bones suggest that the massive asteroid strike at the end of the Cretaceous Period occurred during the Northern Hemisphere’s spring.

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  5. illustration of a giant crocodile eating a dinosaur
    Paleontology

    Fossils show a crocodile ancestor dined on a young dinosaur

    The 100-million-year-old fossil of a crocodile ancestor contains the first indisputable evidence that dinosaurs were on the menu.

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  6. illustration of sauropod dinosaurs
    Paleontology

    Fossils reveal what may be the oldest known case of the dino sniffles

    A respiratory infection that spread to air sacs in the vertebrae of a 150-million-year-old sauropod likely led to now-fossilized bone lesions.

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  7. images of adult and juvenile pterosaur fossils with arrows pointing to fossilized gastric pellets
    Paleontology

    Fossils reveal that pterosaurs puked pellets

    Fish scale–filled pellets found by two pterosaurs are the first fossil evidence the flying reptiles regurgitated undigestible food, like some modern birds.

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  8. image of a fossilized wasp
    Paleontology

    See stunning fossils of insects, fish and plants from an ancient Australian forest

    Thousands of fossils at an Australian site show a rare glimpse into the continent’s wetter history over 11 million years ago.

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  9. illustration of a new species of ankylosaur with a sunset in the background
    Paleontology

    This dinosaur had a weapon shaped like an Aztec war club on its tail

    The flat and spiky tail club of a newly discovered ankylosaur was unique, even for this often weirdly armored group of dinosaurs.

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  10. illustration of a penis worm on the ocean floor
    Paleontology

    ‘Penis worms’ may have been the original hermits

    Soft-bodied critters called penis worms inhabited abandoned shells — a la modern-day hermit crabs — by about 500 million years ago, a study suggests.

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  11. illustration of nine dinosaurs of differing ages
    Paleontology

    Some dinosaurs may have lived in herds as early as 193 million years ago

    A fossilized family gathering of long-necked Mussaurus may be the earliest evidence yet of herd behavior in dinosaurs.

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  12. an illustration of a giant ground sloth eating from a mammal carcass in front of a cave
    Animals

    Giant ground sloths may have been meat-eating scavengers

    Contrary to previous assumptions, at least one ancient giant ground sloth was a meat eater.

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