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Arthropods (phylum Arthropoda) are the largest phylum of animals and include the insects, arachnids, crustaceans, and others.

More than 80% of described living animal species are arthropods, with over a million modern species described and a fossil record reaching back to the early Cambrian.

Note:   The above text is excerpted from the Wikipedia article "Arthropod", which has been released under the GNU Free Documentation License.
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November 29, 2015

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