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Big bang!
Started 10 billion to 20 billion years ago. A Belgian priest named Georges Lemaître suggested the big bang theory in the 1920s. -
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History of the universe!
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Precambrian Period
Started billion years ago. Earth was already more than 600 million years old when life began. -
Period: to
Precambrian
Started 4.5 billion years ago -
Cambrian Period
many of the major animal groups alive today started in this period. Cambrian sediments found in Canada, Greenland, and China yield rare fossilized soft-bodied creatures. -
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Paleozoic Era
An era including Cambrian, Ordovician, Silurian , Devonian, Carbonifirous, and Permian periods. -
Ordovician Period
A rich variety of marine life flourished in the vast seas and the first plants began to appear on land. -
Silurian Period
First plants and animals on land. The many limestone rock formations that date to this period. -
Devonian Period
http://science.nationalgeographic.com/science/prehistoric-world/devonian/ It dawned about 416 million years ago. The fishes weren't built to last in this period. -
Mississippian Epoch
Lasted for about 40 million years. Euramerica and western Gondwana drifted northwards and moved closer together. -
Period: to
Carboniferous Period
Divided into the Mississippian and the Pennsylvanian epochs. Carboniferous coal was produced by bark-bearing trees. -
Pennsylvanian Epoch
Lasted about 33 million years. A result of the collision of Gondwana and Laurasia the supercontinent of Pangea comes into being. -
Permian Period
Pangea came together. The largest mass extinction the Earth has ever known. -
Triassic Period
http://science.nationalgeographic.com/science/prehistoric-world/triassic/ Something about of violent volcanic eruptions, climate change, or perhaps a fatal run-in with a comet or asteroid. The giant ocean called Panthalassa surrounded Pangaea. -
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Mesozoic Era
Includes Triassic, jurassic, and Cretaceous periods. -
Jurassic Period
http://www.youtube.com/watch?v=4et9IEe148E Dinosaurs, birds, rodents, sea monsters, sharks, and blood-red plankton. The dry deserts slowly took on a greener hue. -
Cretaceous Period
http://www.youtube.com/watch?v=m56kbq3wdaI Rodents scurried at their feet through forests of ferns, cycads, and conifers. At the end of the period, about 80 million years ago, oceans filled yawning gaps between the isolated continents shaped much as they are today. -
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Cenozoic Era
-- Tertiary period -- Quatemary period -Paleocene epoch -Holocene epoch
- Eocene epoch -Pleistocene epoch
- Oligocene epoch
- Miocene epoch
- Pliocene epoch -
Tertiary and Quaternary periods
Teritary includes Paleogene, Eogene, Oligocene, Miocene, and Pilocene epochs. Quaternary includes Pleistocene and Holocene epochs. -
Epochs Times
-Paleocene -- 7am
-Eocene -- 9am
-Oligocene -- 12pm
-Miocene -- 1pm
-Pliocene -- 8pm
-Pleistocene -- 11:30pm
-Holocene -- 11:59pm
