Search Results for: Vertebrates

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1,512 results
  1. Life

    Bizarre caecilians may be the only amphibians with venomous bites

    Microscope and chemical analyses suggest that, like snakes, caecilians have glands near their teeth that secrete venom.

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  2. Paleontology

    Deep caves are a rich source of dinosaur prints for this paleontologist

    Several deep caves in France are proving to be a surprising source of dinosaur tracks.

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  3. Animals

    Here’s why a hero shrew has the sturdiest spine of any mammal

    The hero shrew’s rigid backbone is among the weirdest mammal spines, its incredible strength aided by fortified vertebrae bones.

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  4. Life

    An ancient critter may shed light on when mammals’ middle ear evolved

    Rare skeletons are helping to pin down the evolution of mammals’ three middle ear bones, known popularly as the hammer, anvil and stirrup.

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  5. Paleontology

    Big dinosaurs kept cool thanks to blood vessel clusters in their heads

    Giant dinosaurs evolved several strategies for cooling their blood and avoiding heatstroke.

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  6. Earth

    50 years ago, an Antarctic fossil pointed to Gondwanaland’s existence

    Fifty years ago, fossils from Antarctica helped seal the deal that the southern continents were once connected in one, giant landmass called Gondwanaland.

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  7. Paleontology

    A flexible bone that helps mammals chew dates back to the Jurassic Period

    A flexible bone that helps with chewing may have helped give rise to the Age of Mammals, a new fossil shows.

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  8. Paleontology

    Small ‘cousins’ of T. rex may actually have been growing teenagers

    Fossil analyses suggest that Nanotyrannus wasn’t a diminutive relative of the more famous behemoth Tyrannosaurus rex.

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  9. Paleontology

    The first vertebrates on Earth arose in shallow coastal waters

    After appearing about 480 million years ago in coastal waters, the earliest vertebrates stayed in the shallows for another 100 million years.

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  10. Animals

    Geneticists close in on how mosquitoes sniff out human sweat

    A long-sought protein proves vital for mosquitoes’ ability to detect lactic acid, a great clue for finding a human.

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  11. Paleontology

    This ancient dinosaur was no bigger than a hummingbird

    The skull of one of these Mesozoic Era birds — the tiniest yet known — was discovered encased in a chunk of amber originally found in Myanmar.

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  12. Animals

    Deep-sea fishes’ eye chemistry might let them see colors in near darkness

    An unexpected abundance of proteins for catching dim light evolved independently in three groups of weird deep-sea fishes.

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