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The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence , mainly fossils .
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.
Timelines from the formation of the Earth to the rise of modern humans Timeline of natural history (13,700,000,000 BCE – 200,000 BCE) Timeline of the evolutionary history of life (4,300,000,000 BCE - present) Timeline of human evolution (4,300,000,000 BCE – 350,000 BCE) Timeline of human prehistory (350,000 BCE – 3400 BCE)
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...
Human evolution is the evolutionary process within the history of primates that led to the emergence of Homo sapiens as a distinct species of the hominid family that includes all the great apes. [1]
For events dating from the formation of the planet to the rise of modern humans see: Timeline of natural history, Timeline of the evolutionary history of life and Timeline of human evolution. For events dating from the first appearance of Homo sapiens to before the invention of writing see: Timeline of prehistory
New research shows that ancient southern Kalahari was more important to human evolution than previously thought. Recent research from South Africa is redefining our timeline of human evolution ...
Evolution is the change in the heritable characteristics of biological populations over successive generations. [1] [2] It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. [3]