Growth study of wild chimpanzees challenges assumptions
about early humans.

Interesting study, but their view of the Homo erectus is, to
say the least, odd. Certainly it isn´t an intermediate, it´s
part of the genus Homo and the members of Homo erectus were
human beings. Not totally like us, but human beings. Very
far from the current ancestor of chimps and humans - which,
by the way, don´t have to have been "chimplike". Chimps too
have evolved during these last 7-8 million years.