its not that bad. each tier of dino are in the same area. t1 to west and southwest. t2 to the south east. t3 to north. t2 are a little bit spread out, but the others are in fairly small group areas. if you have all the upgrades, there isn't much reason to leave an area for a long while.
I hunt t1 until I have 50 of each meats. move on to t2 and do the same and so on.