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Sea spiders (Pycnogona) | |
 | Catalog / Nature / Life / Animals (Animalia) / Jointed legged animals (Arthropoda) / Chelicerata / Sea spiders (Pycnogona) |
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Pycnogonida Class
Sea spiders appear to be a sort of marine "spider," but in fact their relationships are enigmatic. They may represent a very early branching of the chelicerate lineage. There are approximately 1000 described species of pycnogonids, all of which are marine. [eng] |
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Introduction to the Pycnogonida
Pycnogonids feed on soft-bodied invertebrates, in particular cnidarians, sucking at them with their probosces, and larval pycnogonids often live as parasites within cnidarian tissues. The intestine of pycnogonids has extremely long diverticulae (blind pouches) that extend to the ends of the legs. [eng] |
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