Found 1 definition: merostomata.
[WORDNET DICTIONARY]
Noun merostomata has 1 senses
merostomata(n = noun.animal) class merostomata - used in some classifications; includes the orders Xiphosura and Eurypterida;
is a kind of arthropod
is a member of chelicerata, superclass chelicerata
[CIDE DICTIONARY]
merostomata, prop. n. pl. [NL., fr. Gr. me`ros thigh + , -, mouth.].
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]
[RELATED WORDS]
class merostomata