2 ms·

But life hadn't evolved on land 500 million years ago.

• jacquesm 3y ago
  Yes, that was sort of the point. So you get 100's of millions of years during which things can rearrange themselves. Whoever - or even whatever - inherits the Earth after the next big impact will find it changed dramatically compared to how it is today. By the time they evolve intelligence (optional) have toolmaking needs (optional) and are living on land (optional) they will have plenty of time to figure out where it is going to come from, the earths crust will be rearranged enough that you can expect all kinds of stuff to have risen to the surface that is now inaccessible. Heck even the Himalayas have formed only 50 million years ago.