This is so darn cool.

In my early teens, I and my best friend would walk up, climb up nearby hills some 35 miles away from the ocean. There we would uncover evidence of sea life. Always wondered how long ago those items shells etc lived.

That was California here in Kansas I know of a place where and seen a shark tooth. Maybe I will go there chip some rock and see what I can find.

What did Earth look like, , ?