'Merostomata' definitions:
Definition of 'Merostomata'
(from WordNet)
noun
Used in some classifications; includes the orders Xiphosura and Eurypterida [syn: Merostomata, class Merostomata]
Definition of 'Merostomata'
From: GCIDE
- Merostomata \Mer`o*stom"a*ta\, prop. n. pl. [NL., fr. Gr. me`ros thigh + ?, -?, mouth.] (Zool.) A class of Arthropoda, allied to the Crustacea. It includes the trilobites, Eurypteroidea, and Limuloidea. All are extinct except the horseshoe crabs (Limulus) of the last group. See Limulus. [1913 Webster]