In biogeography, Neotropic or Neotropical refers to one of the world's eight terrestrial ecozones.This ecozone includes South and Central America, the Mexican lowlands, the Caribbean islands, and southern Florida, because these regions share a large number of plant and animal groups.It is sometimes used as a synonym for the tropical area of South America, although the ecozone also includes temperate southern South America. The Neotropical Floristic Kingdom excludes southernmost South America, wh