Sorry, couldn't resist.
No, existence is just "evidence"(I think we have been far afield on the semantics here) of such, as a Timex™ watch is evidence of a Timex™ company (although a certain chap named Dawkins -and others- has trouble with this concept). Yet the questions posed are evidently stumpers to Darwinians.
I suspect they were stumpers to everyone. Was there a real point? As in, "Where is the fossil record leading to chimps and bonobos?"
Probably with the fossil record leading to bats (but in the latter case I'm purely guessing). If it happened in an eroding, forested upland, you won't find much fossil trace.
Sorry, couldn't resist.