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History of the Earth Timeline Presentation. By Lucas Krupkin. Info. Increment : 100 Million Years Additional Research Website : http://www.enchantedlearning.com/subjects/Geologictime.html. Green Arrow=4.6Bya Beginning of Precambrian Era Blue Arrow=4.6Bya Earth Formed. 4.6 Billion Years Ago.
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History of the Earth Timeline Presentation By Lucas Krupkin
Info Increment: 100 Million Years Additional Research Website: http://www.enchantedlearning.com/subjects/Geologictime.html
Green Arrow=4.6Bya Beginning of Precambrian EraBlue Arrow=4.6Bya Earth Formed 4.6 Billion Years Ago
Blue Arrow=3.9Bya Bacteria Started Forming 3.9 Billion Years Ago
Light Green Arrow=1Bya Algae Formed 1 Billion Years Ago
Yellow Arrow=544Mya Insects AppearRed Arrow=544Mya Beginning of Paleozoic Era “Age of the Amphibian”Blue Arrow=542Mya Sponges Appeared on EarthGreen Arrow=540Mya Cambrian Explosion “Explosion of Life”Purple Arrow=540Mya First TrilobitesLight Blue Arrow=505Mya First CoralsLight Green Arrow=500Mya Ammonites AppearOrange Arrow=500Mya First Land Plants Fern 500 Million Years Ago
Light Green Arrow=408Mya First Amphibians: Sharks and Bony Fish 400 Million Years Ago
Purple Arrow=360Mya Winged Insects AppearYellow Arrow=325Mya First Reptiles 300 Million Years Ago
Yellow Arrow=260Mya Pangaea FormedBlue Arrow=248Mya Large Mass Extinction CreaturesGreen Arrow=245Mya Beginning of Mesozoic Era “The Age of the Reptiles”Red Arrow=225Mya First DinosaursPurple Arrow=208Mya First Birds and Flowers 200 Million Years Ago
Orange Arrow=146Mya First CrocodileLight Green=130Mya First Mammals 100 Million Years Ago
Orange Arrow=65Mya Beginning of Cenozoic Era“The Age of Mammals” Blue Arrow=64Mya Extinction of DinosaursRed Arrow=54Mya First Rodents AppearGreen Arrow=5Mya First Whales Purple Arrow=4Mya Hominids AppearLight Blue Arrow=0.01Mya Last Ice Age Light Green Arrow=0.01Mya Modern Humans “Homo Sapiens” 2009