The Evolution of Humankind
4.8-1.1 MILLION YEARS AGO Africa Early human-like apes, closely related to chimpanzees and gorillas. They varied in height from 3 ft (0.9 m) to nearly 6 ft (1.8 m), had a brain one-third of the size of ours, and walked upright. Vegetarian.
2.3-1.4 MILLION YEARS AGO East Africa Long-armed, largely plant-eaters but also scavenger-hunters, 4-5 ft (1.2-1.5 m) tall, with protruding jaws and brains half the size of ours. They lived in organised social groups, used crude tools and probably communicated with basic speech.