Word Study
[2x]
: Pâ Pæ Pè Pé Pœ P- P. P/ P< Pa Pb Pc Pd Pe Pf Ph Pi Pj Pk Pl Pm Pn Po Pp Pr Ps Pt Pu Pv Pw Px Py
proterosaurus
CIDE DICTIONARY
proterosaurus, n. [NL., from Gr. earlier (fr. before) + a lizard.].
An extinct genus of reptiles of the Permian period. Called also Protosaurus . [1913 Webster]
For further exploring for "proterosaurus" in Webster Dictionary Online