Oook, oook! (partial ping)
Now for my 2 cents.
"There is no doubt from the measurements that this is the skull of a chimp, although the crest is strange."
So we have skulls? We have DNA then? It either is, or isn't a chimp. The crest of the skull is "strange" meaning what? It ain't a chimp? Make up your mind.
It either is/or it isn't different from the species of "chimp." I can't tell if this is baloney or not, but it wouldn't surprise me for there to be another species out there. The world is still a big place.
Maybe it is the "missing link." Imagine that.