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invertebrate
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invertebrate

Animal without a backbone. The invertebrates form all of the major divisions of the animal kingdom called phyla, with the exception of vertebrates. Invertebrates include the sponges, coelenterates, flatworms, nematodes, annelids, arthropods, molluscs, and echinoderms.

Primitive aquatic chordates such as sea squirts and lancelets, which only have notochords and do not possess a vertebral column of cartilage or bone, are sometimes called invertebrate chordates, but this is misleading, since the notochord is the precursor of the backbone in advanced chordates.



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In the photographs, however, the team identified more than two dozen species of sponges, mollusks, sea urchins, and other invertebrates, including a sea snail.
Life under ice by Sohn, Emily / Science News for Kids
Sequestering toxins is well known in invertebrates, poison arrow frogs, and a few birds that eat poison-bearing invertebrates, notes Becky Williams of the University of California, Berkeley, who has studied garter snakes.
Bite this: borrowed toad toxins save snake's neck by Milius, S. / Science News
Published on behalf of the Society for In Vitro Biology, "In Vitro Cellular & Developmental Biology" will be produced six times a year to cover the latest research, techniques and developments related to in vitro cultivation of cells, tissue, organs or tumors from invertebrates and vertebrates.
Springer Science + Business (New York) will launch two new journals ... by Business Publisher
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