Homo naledi Had Small but Surprisingly Complex Brain
According to new research, despite its small brain size, Homo naledi shared several aspects of structure in common with other species of the genus Homo (H. habilis, H. rudolfensis, H. floresiensis, and H. erectus), not found in other hominins or great apes, suggesting that innovations in brain structure were ancestral within our genus.
http://www.sci-news.com/othersciences/anthropology/homo-naledi-brain-06010.html