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This article, Blind Cousins to the Arthropod Superstars (by Carl Zimmer, posting on Discover) clears up a few things for me. I always wondered about centipedes and millipedes, how they fitted in.
And it turns out that waterbears are related to the spiders. Distantly, of course.
And here's a handy "tree" from that article. The insects fit under Crustacea. Who knew? And I like the new designation, "Miracrustacea". "Mira", in Spanish means, "Look here!"
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