Of or relating to the biogeographic region that includes Europe, the northwest coast of Africa, and Asia north of the Himalaya Mountains, especially with respect to distribution of animals.

• 古北区的属于或关于包括欧洲，非洲西北岸以及喜马拉雅山北的亚洲的生物地理区，尤其从动物的地理分布来说