Australopithecus remains have been found in sites throughout Ethiopia and into Tanzania. They date from 3 to 3.6 million years old and were bipedal, with small, nonhoning canines and large molars.
The most well-known Australopithecus species is Au. afarensis, which has more than 400 fossil examples from almost every part of the human skeleton. 90% of the fossils ascribed to Au. afarensis come from Hadar, a location in Ethiopia's Afar Triangle, and are dated to between 3.6 and 2.9 million years old. Fossils of Au. afarensis have also been discovered in Tanzania, Kenya, and Chad.
The primary remains record for this species also comes from Hadar, where researchers were able to identify the bones of at least nine adults and four youngsters who were interred together (the "First Family") as well as a 40 percent complete adult female skeleton named Lucy.
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