Two questions to think about

Allan Krill

If a population of chimps evolved in an isolated aquatic habitat with no predators for a million years, wouldn't they become just like humans?

No fossils of a chimp or any other mammal have ever been found in the chimp range of central western Africa... 
If humans evolved there without a single fossil being formed, wouldn't paleontologists claim that fossils in arid places are significant, so they have fossil material to work with?