Orphalesion
Well-Known Member
In the real world it's estimated that only 1% of all extinct species left fossils behind. The conditions under which remnants can become fossils are so rare and specific that it would not be surprising at all if those paradox Pokemon left no fossils behind.Reminder as well that it is also stated for some Scarlet Paradox Pokemon that although they appear to be from prehistoric times, there are no fossil records of said Pokemon when there should be.
Though I agree that there is most likely more going on in area zero than just "simply" time travelling. What exactly that is will probably be revealed in the DLC.