http://en.wikipedia.org/wiki/Animal
The Ecdysozoa are protostomes, named after the common trait of growth by moulting or ecdysis.The largest animal phylum belongs here, the Arthropoda, including insects, spiders, crabs, and their kin. All these organisms have a body divided into repeating segments, typically with paired appendages. Two smaller phyla, the Onychophora and Tardigrada, are close relatives of the arthropods and share these traits.
The Ecdysozoa are protostomes, named after the common trait of growth by moulting or ecdysis.The largest animal phylum belongs here, the Arthropoda, including insects, spiders, crabs, and their kin. All these organisms have a body divided into repeating segments, typically with paired appendages. Two smaller phyla, the Onychophora and Tardigrada, are close relatives of the arthropods and share these traits.
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