User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-5009980-20121128172858/@comment-74.193.211.56-20121128182547

Well in order for these two raptors to be in the same continent/region they had to migrate from their respective homelands most likely via land bridge. Hence why we see Yian Kut-Ku, Gypceros, Rhenoplos, Gargwa, and Tigrex.