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.

Explore the relationship between climate and human evolution more deeply by magnifying the timeline. thousands of years ago Color Key Roll over colored markers for more information. Drag along the time line.

2009年7月14日 · Timeline: The evolution of life. The story of evolution spans over 3 billion years and shows how microscopic single-celled organisms transformed Earth and gave rise to complex organisms like...

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.

For more than a billion years, the timeline of life on earth existed in primal forms. All life was single-celled organisms, made up mainly of bacteria and algae. When did life first evolve? It’s unknown why, but around 900 million years ago simple multi-celled organisms started to appear.

TimeTree is a public knowledge-base for information on the evolutionary timescale of life. Data from thousands of published studies are assembled into a searchable tree of life scaled to time. Timepanels showing events in geological time and astronomical history are provided for comparison with timelines and timetrees.

A Timeline of the Eons’s, Era’s, & Periods. The development of life over the last 3,700 million years of the Earth's history is one of the great stories told by modern science. During most of this time living things left only traces to indicate their existence.

Nasīr al-Dīn al-Tūsī (1201-1274) develops a theory of evolution with organisms gaining differences through adapting to their environments. He suggests that organisms which gain beneficial new features quicker have advantages over others and are more variable.

In biology, evolution is the process by which populations of organisms acquire and pass on novel traits from generation to generation. Its occurrence over large stretches of time explains the origin of new species and ultimately the vast diversity of the biological world.

2025年1月12日 · Life - Evolution, History, Earth: The evidence is overwhelming that all life on Earth has evolved from common ancestors in an unbroken chain since its origin. Darwin’s principle of evolution is summarized by the following facts.