Neogaean

from The Collaborative International Dictionary of English v.0.48

Neogaean \Ne`o*gae"an\ (n[=e]`[-o]*j[=e]"an), a. [Neo- + Gr.
   gai^a earth.] (Zool.)
   Of or pertaining to the New World, or Western Hemisphere.
   [1913 Webster]