Human Origins 101 | National Geographic
The Evolution of Humanity
The Beginning of Human Evolution
- The story of humanity's evolution began approximately seven million years ago when the human lineage diverged from chimpanzees, setting the stage for a unique evolutionary journey.
- Over 20 early human species, or hominins, emerged during this period; most became extinct while some may have contributed to modern humans' ancestry.
Characteristics of Early Hominins
- Early hominins displayed varying degrees of human-like traits, including larger brains, smaller teeth, bipedalism, and tool use.
- These hominins are categorized into three major groups: early hominins, australopithecines, and members of the genus Homo.
Australopithecines: A Key Phase in Evolution
- Australopithecines lived between 4.4 and 1.4 million years ago across Africa; they retained some ape-like features but showed significant advancements toward human traits.
- Notable changes in skull structure and locomotion indicate a shift towards consistent bipedal movement among australopithecines.
The Rise of the Genus Homo
- Members of the genus Homo appeared over two million years ago and coexisted with some australopithecine species.
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