Palaeogaean
adjective
Palaeo·gae·an
variants or Palaeogean or less commonly Paleogean
ˌpālēōˈjēən,
ˌpal-
: of, relating to, or being a biogeographic realm consisting of the entire eastern hemisphere
Word History
Etymology
New Latin Palaeogaea eastern hemisphere, literally, old world (from pale- + -gaea) + English -an