Eosaurus
Pronunciation : E`o*sau"rus
Part of Speech : n.
Etymology : [NL., fr. Gr. 'hw`s dawn + say^ros lizard.] (Paleon.)
Definition : Defn: An extinct marine reptile from the coal measures of Nova Scotia; -- so named because supposed to be of the earliest known reptiles.
Source : Webster's Unabridged Dictionary, 1913