The best age estimate for the Earth's final formation is about 4540 million yearsДЄgo, based on data from the Canyon Diablo meteorite. The Isua Supracrustal rocks in West Greenland are dated at about 3700 to 3800 million years The oldest rocks dated so far are from the Acasta Gneiss Complex near Great Slave Lake, Canada with an age of about 4030 million years. Scientists estimate that our planet, Earth, formed around 4600 million yearsДЄgo. The Age of Humans - the Holocene epoch (8,000 yearsДЄpproximately 4600 million years ago - The Hadean Period (4600 m.y.Glaciation, the Moa and Homo sapiens - the Pleistocene.The first hominids - the Pliocene epoch (5.3 m.y.Kelp forests and horses - the Miocene epoch (23.8 m.y.Grasses and primates - the Oligocene epoch (33.7m.y.Whales and horses - The Eocene epoch (55.5 m.y.

The final season of the dinosaurs - The.Dinosaurs and birds - the Jurassic period (213 m.y.Mammals and dinosaurs - the Triassic period (248m.y.-213m.y.).Pangea - the Permian period (286m.y.- 248m.y.).Reptiles and Conifers - the Carboniferous Period (360m.y.Invasion of the land - the Devonian period (410m.y.Venturing on land - the Silurian Period (440 m.y.The Rise of the fish - The Ordovician Period (505.The Cambrian Explosion - The Cambrian Period.The first algae - 1200 million years ago - The Proterozoic.Birth of Earth - approximately 4600 million yearsДЄgo - The Hadean Period (4600 m.y.List of useful reference websites at the very end of the sections Their biological and geological significance. The evolution of life is organised into 20 sections referring to For further information on each geological period or special life forms mentioned, there are links to other websites about this time. Prokaryotes, for example are the most successful and abundant organisms on Earth, in both numbers and biomass and still make up to 90% of the total weight of living things. Many life forms that were not mentioned in this text were very successful and have evolved or in some cases maintained a very successful life strategy. However this should not give the impression that the evolution of life on Earth is or was a sequential event. For reasons of simplicity some important events and life forms were selected for each geological time span. This section provides information about the evolution of life on Earth.

Middle and recent earth history