Paleo Earth

Evidence from radiometric dating indicates that Earth is about 4.54 billion years old. The deep time of Earth's past has been organized into various units according to events which took place. Different spans of time on the Geologic time scale are delimited by changes in the composition of strata which correspond to them, indicating major geological or paleontological events, such as mass extinctions, for example the Cretaceous–Paleogene extinction event, which marked the demise of dinosaurs
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The Sturtian and Marinoan glaciations, which are the greatest ice ages known to have occurred on Earth, occurred during Cryogenian period.

The Cryogenian is a geologic period that lasted from 850 to 635 million years ago .

Late Jurassic is well known for many famous types of dinosaurs  http://space-telescopes-news.blogspot.com/2010/10/late-jurassic.html

Late Jurassic is well known for many famous types of dinosaurs http://space-telescopes-news.blogspot.com/2010/10/late-jurassic.html

The Archean is one of the four principal eons of Earth history. When the Archean began, the Earth's heat flow was nearly three times as high as it is today, and it was still twice the current level at the transition from the Archean to the Proterozoic    http://space-telescopes-news.blogspot.com/2010/03/archean.html

The Archean is one of the four principal eons of Earth history. When the Archean began, the Earth's heat flow was nearly three ti.

A trip to Earth's geologic history. How Earrth was look like 4.5 billion years ago until sum million years from today.     https://www.youtube.com/watch?v=nEZi7fsZikE

A trip to Earth's geologic history. How Earrth was look like billion years ago and how it will some million years from today.

The fossil record from latest Precambrian is sparse, as more easily-fossilized hard-shelled animals had yet to evolve. The Ediacaran biota include the oldest definite multicellular organisms with tissues, and the most common types resemble segmented worms, fronds, disks, or immobile bags.

The fossil record from this period is sparse, as.

The Earth began to form about 4.54 billion years ago through the condensation of material around the sun. As this material collected, further cosmic material was drawn to it by gravity from all directions, increasing the size of the Earth. This process created an enormous amount of heat, which melted these materials and eventually allowed them to separate into different layers.

The Hadean is the first geologic eon of Earth and lies before the Archean . It began with the formation of the Earth about .

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