all the animals living in an area or in a particular period of history （某地区或某时期的）动物群，动物区系 the local flora and fauna (= plants and animals) 当地动植物群 - (specialist)
land and marine faunas 陆地和海洋动物区系
Word Originlate 18th cent.: modern Latin application of Fauna, the name of a rural goddess, sister of Faunus.