Lucy had an ape-like brain: Three-million-year-old brain imprints show that Australopithecus afarensis infants may have had a long dependence on caregivers — 

A new study led by paleoanthropologists reveals that Lucy’s species Australopithecus afarensis had an ape-like brain. However, the protracted brain growth suggests that — as is the case in humans — infants may have had a long dependence on caregivers.

Source: Lucy had an ape-like brain: Three-million-year-old brain imprints show that Australopithecus afarensis infants may have had a long dependence on caregivers — ScienceDaily