Keep in mind that a Mod can spawn any Pokemon he or she wishes wherever he or she wants, but chances are they are going to spawn Pokemon in areas that make sense. Chances are, if you're in the forest, you're going to get a Grass or Bug type. But if a Mod is feeling mean they might just drop a random Wailord on top of you in the middle of a desert.
Any Pokemon not listed on here is considered common and there's a fairly good chance you'll come across them easily.
Legendary[/u] *These Pokemon can only be caught on Legendary Isle. Keep in mind that one person may only have three legendaries at a time and that legendaries cannot be traded to other members (including your other accounts). Also, legendaries take up TWO slots of your team. * [/center] *Phione will evolve into Manaphy at level 70