noun
extinct aquatic arthropods of the Paleozoic
• Syn: ↑order Eurypterida
• Hypernyms: ↑animal order
• Member Holonyms: ↑Merostomata, ↑class Merostomata
• Member Meronyms: ↑eurypterid
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\\ˌyu̇rə̇(p)ˈterədə, -u̇rə̇(-\ noun pluralUsage: capitalized
: an order of aquatic Paleozoic arthropods commonly forming with the related king crabs the class Merostomata, having a cephalothorax with six pairs of limbs of which the last pair were usually shaped like paddles and a tapering abdomen of 13 segments, and including the largest known arthropods, some exceeding 6 feet in length
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Eurypterida /-terˈi-də/ plural noun
A Palaeozoic fossil order of Arachnida, scorpion-like aquatic animals, sometimes over six feet long, with the last (sixth) pair of appendages expanded
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Main Entry: ↑Eurypterus
Useful english dictionary. 2012.