Xiphosura


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Related to Xiphosura: Limulidae, Merostomata, Symphyla, Eurypterids
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Noun1.Xiphosura - horseshoe crabs and extinct forms
animal order - the order of animals
class Merostomata, Merostomata - used in some classifications; includes the orders Xiphosura and Eurypterida
family Limulidae, Limulidae - horseshoe crabs
References in periodicals archive ?
This suggests an expansion of opsins in Xiphosura occurred after their split from the rest of Euchelicerata.
He compared them to present-day Xiphosura, which make incursions into brackish waters and up rivers into freshwater environments.