Defn: A genus of ophiurans with much-branched arms.
EURYALIDA
Eu`ry*al"i*da, n. pl. Etym: [NL.] (Zoöl.)
Defn: A tribe of Ophiuroidea, including the genera Euryale,
Astrophyton, etc. They generally have the arms branched. See
Astrophyton.
EURYCEROUS
Eu*ryc"er*ous, a. Etym: [Gr. (Zoöl.)
Defn: Having broad horns.
EURYPTEROID
Eu*ryp"ter*oid, a. Etym: [Eurypterus + -oid.] (Paleon.)
Defn: Like, or pertaining to, the genus Euryperus.
EURYPTEROIDEA
Eu*ryp`te*roi"de*a, n. pl. Etym: [NL. See Eurypteroid.] (Paleont.)
Defn: An extinct order of Merostomata, of which the genus Eurypterus is the type. They are found only in Paleozoic rocks. [Written also Eurypterida.]
EURYPTERUS
Eu*ryp"te*rus, n. Etym: [NL., fr. Gr. (Paleon.)