[truth_seeker]

“If there were world-wide floods that wiped out most life on Earth, then it isn’t likely that we are ancestors of the non-survivors.”

Uh, no. Our ancestors were among the survivors.

[RegulatorCountry]

“If there were world-wide floods that wiped out most life on Earth, then it isn’t likely that we are ancestors of the non-survivors.”

Not even possible unless time travel was involved. Maybe you mean descendants?

[tumblindice]

The non-surviving descendants had unsuccessful pre-Neanderthals as ancestors?

[UCANSEE2]

Our ancestors were among the survivors.

Reminds me of the old joke punch line "Where did they bury the survivors?"

Anyway, my point was that these alleged 'pre-Neanderthals' might be part of the non-survivors, ergo not our ancestors.