01 n. pl. An order of Merostomata, including among living animals the genus Limulus, with various allied fossil genera, mostly of the Carboniferous p…
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An order of Merostomata, including among living animals the genus Limulus, with various allied fossil genera, mostly of the Carboniferous period. Called also Xiphosura.(Zool.) Also: <ord>Xiphosura</ord>