This conflicts slightly with traditional usage of terrestrial as a synonym for "terran" ("of Earth" in general, whether land or oceans). It follows its alternate meaning, roughly "of dirt", e.g. as in Terrestrial planets, which are not all Earth (i.e. Terra) but only of similar mineral composition.
There are 867 terrestrial ecoregions organized into 8 major ecozones.
See also List of the Global 200