Hypertext Webster Gateway: "Eurypterus"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Eurypterus \Eu*ryp"te*rus\, n. [NL., fr. Gr. ? broad + ? a
wing.] (Paleon.)
A genus of extinct Merostomata, found in Silurian rocks. Some
of the species are more than three feet long.
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