"Lucy" and "Ardi"

What sort of environment had it been in the area of Afar in Today's Etheopia 3.2-4.5 Million of years ago? It wa a changing countryside, formed by forests, bushes, humid areas and savannahs. Here "Lucy" and his ancedor "Ardi" lived, whose fossils were found in this region. It was on 11/30/1974 when Donald Johanson and his assistent discovered the fossils of "Luxy" as Australopithecus Afarensis (= southape from the area of Afar) --- and between 1994 and 1997, when A.Asfaw and T.White found those of "Ardi" as Ardipithecus Ramidus (= groundape from the roots of man). "Lucy" is supposed to have been a female with hight of 90 cm and weight of 30-50 Kg. The bones of the legs are a proof of the thesis, that "Lucy" could walk upright. Concerning her teeth which were found, she likely had an age of 20-25 years. The scientists gave her the name after the Beatles song "Lucy in the sky with diamonds". Even "Ardi" had a similar shape and had been living in trees and on the ground and she could walk in an upright way. Therefore the upright walk had been developed first in the surrounding of forests and not in the savannahs, which had been formed in a later period.