Read article here: http://news.nationalgeographic.com/news/2006/09/060920-lucys-baby.html
Fossil skull nicknamed "Lucy's Baby" found in 2006. Estimate 3.3 million years old. Same specie as "Lucy" but skeleton was a 3 year old child.
"Lucy" - (image created from skull bones found in Ethiopia in 1974); 107 cm tall adult, estimated 3.2 million years old, Australopithecus afarensis specie, mixture of ape and human features.