Although Horseshoe Crabs are arthropods, they are more closely related to scorpions and spiders than they are to crustaceans. They are also the only living members in their Order, Xiphosura.
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Although Horseshoe Crabs are arthropods, they are more closely related to scorpions and spiders than they are to crustaceans. They are also the only living members in their Order, Xiphosura.