1. Australopethicus afarensis, 2.8 million years BC
2. Homo habilis, 2-3 million years BC
3. Homo erectus, 1.6 million years BC
4. Homo sapiens, 200,000 years BC
* As will be seen from the caption of the image below, the above is far from cut and dried. Neanderthals are missing from this list. A small percentage of contemporary humans have Neanderthal genes.
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