They belong to a group called Ecdysozoa, which includes insects, spiders, crustaceans, and worms. The adult forms of the embryos can't be positively identified, though a team of paleontologists ...
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Tiny worm makes for big evolutionary discovery: Scientists describe 'Uncus,' the oldest ecdysozoanEveryone has a past. That includes the millions of species of insects, arachnids, and nematode worms that make up a major animal group called the Ecdysozoa. Until recently, details about this ...
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