Evolution: HomininsHominins are defined as:×Use these links to help you fill in the chart:××Documentary: From Ape to Man -(optional)Hominin NameTime frameof existenceCharacteristicsA. Afarensis(Lucy)Between 3.7and threemillionyears agoAfarensis had both ape and human characteristics: members of thisspecies had apelike face proportions (a flat nose, a strongly projectinglower jaw) and braincase (with a small brain, usually less than 500 cubiccentimeters.A. Boisei(Nutcracker Man)About 2.5 to1.15 millionyears agoBoisei is characterized by a specialized skull with adaptations for heavychewing. A strong sagittal crest on the midline of the top of the skullanchored the temporalis muscles (large chewing muscles) from the topand side of the braincase to the lower jaw, and thus moved the massivejaw up and down.
