'Eurypterida' definitions:

Definition of 'Eurypterida'

(from WordNet)
noun
Extinct aquatic arthropods of the Paleozoic [syn: Eurypterida, order Eurypterida]

Definition of 'Eurypterida'

From: GCIDE
  • Eurypteroidea \Eu*ryp`te*roi"de*a\, n. pl. [NL. See Eurypteroid.] (Paleont.) An extinct order of Merostomata, of which the genus Eurypterus is the type. They are found only in Paleozoic rocks. [Written also Eurypterida.] [1913 Webster]

Words containing 'Eurypterida'