1. Hominid Evolution Classification:
Hominids (Family): Bipedal primates (can walk upright on two legs)
Primates (Order): Mammals with excellent eyesight and flexible Hands and Feet
Mammals (Class): Hairy vertebrates who nurse live-born young

2. Australopithecus afarensis 3-4 million y.a.
First hominid to walk upright**

3. Australopithecus africanus
mya
Brain size increases

4. Australopithecus boisei
mya
Skull adapted for heavy chewing
Perhaps first meat eaters?

5. Homo erectus 1.6 mya - 50,000 ya
Used tools, fire. Meat eaters - probably began to cook their food

6. Homo neanderthalensis 200,000 years ago to 30,000 ya
Very highly developed brain, tool use and culture.
Became extinct suddenly. Were they killed off by modern humans?

7. Homo sapiens ~100,000 y.a. - ?

8. Pan troglodytes (Chimpanzees)
Appeared ~1 million y.a.?
Closest Living relative to Humans