Palearctic a. : Belonging to a region of the earth's surface which includes all Europe to the Azores, Iceland, and all temperate Asia.

Example:


Taxonomy
Palearctic, Russia, China, Palearctic ecozone, ecoregions, the Mediterranean, Kazakhstan, Mediterranean basin, North America, Mongolia, desert, Afghanistan, boundary, Siberian region, Nearctic, free encyclopedia, ecozone, Europe.

Defination from the web:
Palearctic's largest biogeographic region, which transitions from tundra in the northern ... Many zoologists consider the Palearctic and Nearctic to be a single Holarctic ecozone. ...