Agreed; but it wasn't a chimp..... it WAS an ape!
;-)
I'd be more interested in finding the common ancestor between Cro Magnon and Neanderthal. It's a lot more recent and a common ancestor of two groups that buried their dead, so there is a probability it buried its dead too.
Of course, what would be really exciting would be finding creatures for which living species, like sharks, are the common ancestor. Sharks have been on Earth for hundreds of millions of years; they should be the common ancestor of thousands if not millions of species. Then you can work with living organisms instead of incomplete fossil records when trying to reconstruct your phylogeny trees.
In fact, I think the primary focus of biologists should be to locate the descendant species for which the so-called living fossils are the common ancestors. TOE predicts they should be everywhere.