Search Results for: Vertebrates

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1,512 results
  1. Readers discuss a new type of black hole merger, warm-bloodedness and more

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  2. Animals

    Fish can recognize themselves in photos, further evidence they may be self-aware

    Cleaner fish recognize themselves in mirrors and photos, suggesting that far more animals may be self-aware than previously thought.

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  3. Physics

    How neutron imaging uncovers hidden secrets of fossils and artifacts

    The technique can complement X-ray scanning and other tools to uncover details of dinosaur fossils, mummies and more.

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  4. 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. Animals

    Scientists thought snakes didn’t have clitorises. They were wrong

    Snakes were long thought to be the only reptile group to lack clitorises. But new findings suggest the sex organs are present after all.

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  6. Paleontology

    Mysterious ichthyosaur graveyard may have been a breeding ground

    Some 230 million years ago, massive dolphinlike reptiles gathered to breed in safe waters — just like many modern whales do, a study finds.

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  7. Animals

    ‘Wonderful nets’ of blood vessels protect dolphin and whale brains during dives

    Complex networks of blood vessels called retia mirabilia that are associated with cetaceans’ brains and spines have long been a mystery.

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  8. Animals

    These tiny marsupials survived wildfires only to face extinction from feral cats

    The Kangaroo Island dunnart was one species seen to reemerge after 2019–2020 Australian bushfires but is now closer than ever to extinction.

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  9. Animals

    Extreme climate shifts long ago may have helped drive reptile evolution

    The end-Permian extinction left reptiles plenty of open ecological niches. But rapid climate change may be what kick-started the animals’ dominance.

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  10. 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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  11. Paleontology

    Pterosaurs may have evolved from tiny, fast-running reptiles

    A mysterious little ground-dwelling reptile unearthed in a Scottish sandstone over 100 years ago turns out to be part of a famous flying family.

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  12. 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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