Also found in: Thesaurus.
Related to order Eurypterida: ground sloths
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|Noun||1.||order Eurypterida - extinct aquatic arthropods of the Paleozoic|
animal order - the order of animals
class Merostomata, Merostomata - used in some classifications; includes the orders Xiphosura and Eurypterida
eurypterid - large extinct scorpion-like arthropod considered related to horseshoe crabs
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