Describe the common ancestor to all the living apes. When and who discovered this?

Question

Describe the common ancestor to all the living apes. When and who discovered this?

Answer 1

One could argue for the following:

In 2004 the 13 million old Pierolapithecus catalaunicus, was discovered in Spain.

"The fossil skeleton's age would make it just old enough to be the last ancestor common to all modern great apes and humans... Salvador Moyà-Solà of the Miguel Crusafont Institute of Paleontology in Barcelona, Spain led the team that made the discovery. "

http://news.nationalgeographic.com/news/...

"The scanty fossil record has revealed several contenders for the common ancestor, including Kenyapithecus and Equatorius or the older Morotopithecus and Afropithecus. But the fossils that do exist indicate that these ape species were more primitive than Pierolapithecus, Moyà-Solà said. "

http://news.nationalgeographic.com/news/...

This is a bit like mind reading. Certainly the teacher has a specific critter in mind but it's something of a guess how "common ancestor of all living apes." is interpeted