I was thinking about how rare it must be to find a dinosaur fossil and got to thinking about how many potenital fossils there could be. This all depends on on many dinosaurs ever existed. Dinosaurs were around for over 160million years. So if 100million were born a year that would be sixteen quadrillion (16x10^16) dinosaurs ever. It really shows what a low probability it is for a dinosaur fossil to survive until today.
Comparebly, from this website:
http://www.prb.org/Articles/2002/How...edonEarth.aspx
about one hundred billion (10x10^10) have ever existed. This also leads to the question of what type of fossils would we leave for 100 million years in the future?