Proterosaurus

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Proterosaurus \Pro`te*ro*sau"rus\, n. [NL., from Gr. ? earlier
     (fr. ? before) + ? a lizard.] (Paleon.)
     An extinct genus of reptiles of the Permian period. Called
     also {Protosaurus}.
     [1913 Webster]