Most Generations Are Lost

I would have preferred better
Claim than not to have ever
Existed. A baby tooth
From Denisova Cave tests
Twenty thousand years older
Then the next oldest adult
Molar found in the same cave.

Same species, same location,
The child perhaps ancestor
To the man. All of human
History could have fallen
Into that gap, twice over,
And disappeared, as if not
To have ever existed.