vertebrates

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Trillions of Glow-in-the-Dark Fanged Fish Live in Ocean

Bristlemouth is most numerous vertebrate on Earth, though it remains mysterious

(Newser) - What's believed to be the most numerous vertebrate on Earth is also one you've probably never heard of or seen—yet scientists say the bristlefish, a fanged creature that glows in the dark and lives deep down in the ocean, likely numbers in the thousands of trillions, reports... More »

When Exploring, Ants March to the Left, to the Left

Scientists are exploring this 'behavioral lateralization'

(Newser) - Roughly nine in 10 humans are right-handed, an example of "brain lateralization" that's pretty common among vertebrates—and now apparently invertebrates. Researchers in the UK are finding that even ants—which are invertebrates, meaning they have exoskeletons—carry an innate directional bias, in their case almost always turning... More »

Your Jaw May Come From This Ancient Fish

Minnow-sized creature had something akin to one 500M years ago

(Newser) - Introducing Metaspriggina, a minnow-sized fish that lived about 500 million years ago and appears to occupy a crucial branch of your family tree. Scientists say the creature might just be the ancestor of nearly all vertebrates, reports LiveScience . The revelation comes after study of dozens of remarkably well-preserved Metaspriggina fossils... More »

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