Selam (Lucy's Baby)
Although this species of Australopithecus afarensis is 120,000 years old than the iconic Lucy, because it was physically much younger at the time of its death, it was revered as being Lucy's child.
This skull was a relatively recent discovery made in 2000, found in the same country as its "mother", Ethiopia. Unlike Lucy, this find was of a nearly complete skull that was encapsulated in a layer of breccia. Because of this hard rock it took a while before careful chiseling could reveal the entirety of the skull. Publication of the find didn't come about until 2006. Selam is thought to have been a three-year old girl based on the eruption of her first permanent molars.