Koobi Fora is located in Kenya to the
east of Lake Turkana. A total of 1,000 square kilometers of area has been
researched in this area. The dating of the site is based on stratigraphic,
faunal, paleomagnetic, and radiometric data. The deposits range in date
from about 4.1 million years to less than 1.0 million years ago. The majority
of fossils from Koobi Fora tend to come from beds dated to between 1.4 to
1.8 million years ago. 
Olduvai Gorge is a canyon that is as much as 300 feet deep and 30 miles long. Olduvai contains a stratigraphic record for the past 2.0 million years. A large quantity of fossils and artifacts have been found during research stemming back to 1935.
There are a number of limestone cave deposits from south Africa that have yielded evidence of early hominids. The most significant of which are Taung, Swartkrans, and Sterkfontein.
It is from this region of Africa that the first discovery of A. africanus was made. These finds clearly indicated a fossil ancestor that was very primitive and yet not an ape.
