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Select > Who • What • When • Where • Which |
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FORMATION OF EARTH > 
4600 MYA Formation of the approximately homogeneous solid Earth by planetesimal accretion. 3800 MYA The Earth's crust solidifies--formation of the oldest rocks found on Earth. 3500 MYA Prokaryotic cell organisms develop. Beginning of photosynthesis by blue-green algae which releases oxygen molecules into the atmosphere and steadily works to strengthen the ozone layer and change the Earth's chemically reducing atmosphere into a chemically oxidizing one. 350-300 MYA Rise of the amphibians, Primitive insects have evolved, Primitive ferns evolve--first plants with roots. 20-12 MYA The chimpanzee and hominid lines evolve. 3.5 MYA The Australopithecus Lucy walks the Earth.
2 MYA Widespread use of stone tools. 2-0.01 MYA Most recent ice age.
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More on this Website >
• http://www.talkorigins.org/ori ... ns/geo_timeline.html
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Earth
The continents are the great land masses of the earth. There are seven continent on Earth now: Africa, Antarctica, Asia, Australia, Europe, North America, and South Ameri... |
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Climate TimeLine Information Tool
Exploring Weather & Climate Change Through the Powers of 10. Weather and climate are always in flux, always changing. At times the changes can be sudde... |
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CAMBRIAN : Explosion of Life on Earth
The Cambrian Period marks an important point in the history of life on earth; it is the time when most of the major groups of animals first appear in the fossil record. T... |
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Pangaea, Supercontinent
Pangaea or Pangea is the name given to the supercontinent that existed during the Paleozoic and Mesozoic eras about 250 million years ago, before the process of plate tec... |
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Africa
Africa is the world's second-largest and second most populous continent, after Asia. At about 30 million km² including its adjacent islands, it covers 5.9% of the Earth's... |
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North America
North America is a continent in the Northern Hemisphere and almost fully in the Western Hemisphere, bordered on the north by the Arctic Ocean, on the east by the North At... |
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South America
South America is a continent situated in the Western Hemisphere between the Pacific and Atlantic Oceans. Most of it is in the Southern Hemisphere. Commonly referred to as... |
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Europe
Europe is conventionally considered one of the seven continents which, in this case, is more a cultural and political distinction than a physiogeographic one. Physically... |
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Oceania
Oceania is a geographical region consisting of numerous countries and territories – mostly islands – in the Pacific Ocean. The exact scope of Oceania is controversial, wi... |
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Asia
Asia is the largest and most populous of the Earth's continents. It is traditionally defined as part of the landmass of Africa-Eurasia lying east of the Suez Canal, east... |
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Antarctica
Speculation over the existence of a "southern land" was not confirmed until the early 1820s when British and American commercial operators and British and Russian nationa... |
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Charles Darwin, Evolution Theory
Charles Robert Darwin was an English naturalist whose revolutionary theory laid the foundation for both the modern theory of evolution and the principle of common descent... |
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Alfred Wegener, Discovery Plate Tectonics
German climatologist and geophysicist who, in 1915, published as expanded version of his 1912 book The Origin of Continents and Oceans. This work was one of the first to... |
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