It was discovered on November 24,1974 by Donald Johanson,Yves Coppens and Tim White at the site of Hadar, Awash River valley, Ethiopia. The specimen found at the time was widely known as Lucy.1
This finding emphasized overothers for many qualities, especially for being the best preserved Australopithecusdiscovered until that date. Thus it was possible to verify that the ability to walk upright like modern humans, longpreceded the growth of the brain. The study of its denture clarified fundamental aspects of hominid evolution and discovered the simultaneous evolution of genres, so that the line Paranthropus, turned awayfrom others and in particular that evolved into Homo. [Citationneeded]
Lucy's remains were found in the place where the tribe lived inAfar, hence the name afarensis, and along with twelveotherindividuals of the same species, including skulls, form what is called the "first family".
 Physical Characteristics
A. afarensis is, like all Australopithecus, an upright bipedalprimate,but unlike us in several ways:
Much smaller cranial capacity: 375 to 550 cm3. This also meansa brain the size of a chimpanzee and nearly a third of the averagemodern human.
Australopithecus afarensis wasa frequent activity hominid tree, whether fruit collecting, caring for their young, and so on.
Her chest was barrel-shaped, like ours, but narrowed sharplyupwards (bell-shaped).Sexual dimorphism (physical difference between males and females of the same species) was very marked, with males beingmuch bigger than females.
Is a genus Ardipithecus fossil hominid found in...