View source for Chronopolis (Early Human Diagram)

==Theories==

===Designer Oversight===

Masato Kato worked on Chrono Trigger and Chrono Cross at the deepest stages of its development, precluding the possibility of making a mistake simply by forgetting Ayla's concept art and the status of humans in [[65000000 B.C.]] This is probably just an accident by the field artists for the maps of Chrono Cross, not caught by Kato or the other higher-ups.

===Other, Farfetched Theories===

* ''Thought:'' Chronopolis got its evolutionary data only from the Dragonians after the [[Polis War]], and in the Dragonian dimension, early humans looked like that (whereas in the Keystone dimension, Ayla and her friends are normal humans).
* ''Chrono'99:'' Chrono Cross is taking creative license. (Chrono Trigger could also retroactively be taking creative license, but this runs into problems with the drawing of Ayla at Lucca's house and the brain/cognition issue.)
* ''Chrono'99:'' Lavos's impact sent the Frozen Flame back in time to 68,000,000 B.C., preserving the three million year figure and allowing for Ayla and her kind to be evolved in time for Crono to meet them.