Cryptostones

Evolution and Settlement (Prehistory) 

How We Became Humans and Populated the Planet

A concise timeline of key milestones in human evolution and dispersal.

Timeline

~6–7 million years BC: Divergence of the human and chimpanzee evolutionary lines.

Oldest split between the tribal lineages that would lead to humans and our closest living relatives, the chimpanzees.

~4–3 million years BC: Emergence of Australopithecus (e.g., Lucy).

Bipedalism becomes a defining trait, enabling efficient upright walking.

~2.8 million years BC: First stone tools (Oldowan culture). Emergence of the genus Homo (e.g., Homo habilis).

Tool use and manufacture expand dietary options and cognitive capabilities.

~1.8 million years BC: Emergence of Homo erectus.

The first substantial migration out of Africa into Eurasia.

~800,000 to 400,000 years BC: Mastery of fire.

Cooking and heat management provide nutritional and social advantages.

~300,000 years BC: Emergence of Homo sapiens in Africa.

Anatomically modern humans appear in the fossil record.

~60,000 to 70,000 years BC: The great migration of Homo sapiens from Africa.

Settlement and expansion across all continents.

~45–40 thousand years BC: Disappearance of the Neanderthals.

Homo sapiens becomes the sole surviving human species on Earth.

Notes and context

The dates are approximate and subject to ongoing research and revision as new fossils and methods (e.g., dating techniques, ancient DNA) become available.

The timeline highlights major transitions (bipedalism, tool use, cognitive and cultural developments, migration, and interactions with other hominins).