Search Results for: Vertebrates

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1,539 results

1,539 results for: Vertebrates

  1. Paleontology

    Big and Birdlike: Chinese dinosaur was 3.5 meters tall

    Paleontologists have unearthed the remains of a gigantic birdlike dinosaur, 3.5 meters tall, that lived 70 million years ago in what is now China.

    By Sid Perkins
  2. Paleontology

    Winged dragon

    A quarry on the Virginia–North Carolina border has yielded fossils of an unusual gliding reptile that lived in the region about 220 million years ago.

    By Sid Perkins

  3. Anemone reveals complex past

    The starlet sea anemone, a primitive creature with ancient evolutionary roots, has a surprisingly complex genome.

    By Patrick Barry

  4. Protein Lineages: Randomness was crucial to ancient genetic changes

    Reconstruction of an ancient protein shows how seemingly unimportant mutations paved the way for its evolution into a molecule with an essential modern role.

    By Patrick Barry
  5. Health & Medicine

    The two faces of prion proteins

    Scientists are learning more about the protein behind mad cow and Creutzfeldt-Jakob disease, including how to interfere with the protein’s production in the brains of mice.

    By Rachel Ehrenberg
  6. Animals

    We all sing like fish

    From opera singers to toadfish, vertebrates may use basically similar circuitry for controlling vocal muscles.

    By Susan Milius
  7. Life

    How the snake got its fangs

    A study of snake embryos suggests that fangs evolved once, then moved around in the head to give today’s snakes a variety of bites.

    By Amy Maxmen
  8. Life

    Female frogs play the field

    A female frog insures a safe home for her young by mating with many males.

    By Rachel Ehrenberg
  9. Life

    Climate warms, creatures head for the hills

    Unusual data let scientists test predictions that global warming drives species up slopes.

    By Susan Milius
  10. Chemistry

    Class Acts from New Pesticides: Chemicals have little effect on mammals

    Two new classes of selective pesticides immobilize and eventually kill many crop-damaging insects by interfering with a cell receptor unique to those pests.

    By Ben Harder
  11. Paleontology

    Raptor Line: Fossil finds push back dinosaur ancestry

    Fossils of a newly discovered raptor dinosaur species suggest that the reptile's lineage is older and more widespread than previously suspected.

    By Sid Perkins
  12. Animals

    Proxy Vampire: Spider eats blood by catching mosquitoes

    Researchers studying food preferences among spiders report finding the first one with a taste for vertebrate blood.

    By Susan Milius