The earliest evidence for human evolution is found in Africa and dates between 4 -7 million years ago. Recent fossil discoveries and analysis of skeletal remains reveal that upright walking (bipedalism) seems to be the pivotal anatomical characteristic that defines the earliest stages of our ancestry. New archaeological excavations at Lake Turkana, Kenya, demonstrate that some populations of very early pre-humans were making stone tools almost 3.5 million years ago, far earlier than previously reported. This PowerPoint presentation will review recent biological and cultural discoveries from these very early phases of human evolution.
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