Hmmmm. We didn't know about the Ananta, nor the Namazu, until Stormblood.

It's almost like there were undiscovered beast tribes that we suddenly found out about. I wonder if that might mean we don't have any idea what the rest of the world holds for us.

We know that there is at least one entire continent on the Source that hasn't been referenced by anything other than what our Blue Mage trainer has told us. Perhaps the pixies are from there. They certainly weren't in Voeburt until after the Flood.

Again, an event that occurred 10,000 years in the past, creating disparate non-synchronous realms, does not mean there absolutely has to be one-to-one correspondences.