What game options do you use Shoobs? I see you're still in Prehistoric and have over 560(!) XP on a Wanderer, that's insane. Granted I play with Dynamic XP, but I'd be closer to 150 XP at that point, at best.
Do difficulty levels influence XP gain?
EDIT: I looked at the screenshots again, those show the very same turn. You gained over 300 XP there, how on earth did that happen? I can't make it out from the pics alone. But whatever it was, it seems really imbalanced that you could get that much XP in one turn, no matter the cause/event that happenend.