The Collaborative International Dictionary
Neogaean
Neogaean \Ne`o*g[ae]"an\ (n[=e]`[-o]*j[=e]"an), a. [Neo- + Gr. gai^a earth.] (Zo["o]l.) Of or pertaining to the New World, or Western Hemisphere.
Wiktionary
neogaean
a. (context zoology English) Of or relating to the New World, or Western Hemisphere.