Fossils suggest tree-dwelling apes walked upright long before hominids did
The 11.6-million-year-old bones still don’t tell us how members of the genus Homo became bipeds
A partial skeleton of an 11.6-million-year-old European ape consists of 21 bones, including one from the lower leg (far right) and another from the forearm (second from right).
Christoph Jäckle