Human evolution: back to the trees?

Scientists have discovered a new and interesting tips in the spinal columns of ancient ancestors of people who indicate that they are different subspecies moved differently depending on the environment. Published in the American Journal of Physical Anthropology study of uncinate processes of the vertebrae, which are responsible for the stabilization of the spinal motion and direction, evaluates them in the form of six fossil hominid in comparison with modern human and non-human primates 99 to 20 genera. Using new morphometric methods, the researchers found clear differences between the hook-shaped spikes of living primates, which usually live in trees, and those that do not live.

Human evolution: back to the trees?

New evidence reveals striking differences between the vertebrae completely earthly types and species of primates that are swinging and jumping from branch to branch, and can help to understand how the extinct species of hominids moved in their midst. Fossils from East Africa, dated 3 and 5 million years ago and belong to Australopithecus afarensis (types Lucy), and Homo erectus, dated 1, 8 - 1, 5 million years ago, correspond to modern human in this regard, suggesting that these extinct hominids learned to walk the earth. On the contrary, fossils from South Africa belonging to the species of hominid Australopithecus sediba, revealed processes that help in moving through the trees.

Human evolution: back to the trees?

As the researchers say, although the South African species, apparently were not completely "off the ground", they hooked spines show adaptation to life in the trees. Theoretically, if the battle for survival is not won, "Homo erectus", we might as well behave elevated lifestyle.