Smithsonian Institution
National Museum of Natural History: Asustralopithecus Afarensis
This resource offers an excellent definition of the species, Australopithecus afarensis.
Science Daily
Science Daily: Earliest Baby Girl Ever Discovered
Article provides a good overview of the exciting find of a three-year-old girl skeleton dating from 3.3 million years ago as well as the significant scientific contributions of this find.