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Xiphosuraan Order of marine chelicerates that include the Horseshoe crabs. Read more on: Xiphosura
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Xiphosura(n) horseshoe crabs and extinct forms
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XiphosuraAn Arthropod subclass (Xiphosura) comprising the North American (Limulus) and Asiatic (Tachypleus) genera of horseshoe crabs.
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