In my understanding, the only two extant species of Alligators exist exclusively in the US and China. *Nowhere else. They are said to have existed for 200 million years, but Pangea broke up 250 M years ago. Just for the sake of argument, say they had evolved on Pangea and just got separated; the lands that are now China and America were on opposing ends of the super continent. They lived on opposite ends and nowhere in between? The Pacific ocean in now smaller than it was then and there's no way I can see a group of them crossing such a massive span of water. Not today. No way then. I've tried finding an answer on Google without success. Do any of the geniuses here have an answer I can fathom? P.S. - why does this site fill in asterisks whenever I try to put a space? Is grammar a dirty word here?