We don't have synonyms for palaearctic yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are palearctic.
(n) :
Alternative spelling of Palearctic. [(geography, biogeography) One of the major ecozones of the world, covering Europe, the former territories of the USSR, part of North Africa, and North Asia including the Himalaya foothills.]
(adj) :
Alternative form of palearctic. [Relating to the Palearctic.]
(n) :
Alternative spelling of Palearctic. [(geography, biogeography) One of the major ecozones of the world, covering Europe, the former territories of the USSR, part of North Africa, and North Asia including the Himalaya foothills.]
(adj) :
Alternative form of palearctic. [Relating to the Palearctic.]