Quote:
Originally Posted by xelasnave
I often wonder if there could have been civilizations around millions of years ago... such is easily dismissed as the fossil record shows humans only got going a couple of million years ago ... but I see no reason why say 50 million years ago a species existed on a continent long sunk below the seas..not Atlantis but even Atlantis is possible...and of course we believe that's not possible but in fact it is...
There may have been a advanced city right where the big rock hit that took out the dinasours..in fact I am almost certain there was 
Alex |
I believe they refer to that as the Silurian hypothesis (yes, after Dr Who, but it's an actual hypothesis that has been put forward)
https://en.wikipedia.org/wiki/Silurian_hypothesis