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(5 billion years ago) Solar System Forms
The solar system was born.
• 5 million years ago, the birth of this solar system occurred, including the creation of the nine planets that still exist among the Milky Way today. -
(4.6 billion years ago) Earth began to form
This was the very beginning of the Earth.
• 4600 million years ago, the earth began to form from what most people believe to be caused from the big bang theory. -
(3.7 billion years ago) Evidence of Life on Earth
This appeared to be some of the first life on earth.
• 3700 years ago, the earth began to show various amounts of evidence of life. -
(3.7 billion years ago) Photosythesizing Bacteria
• 3700 million years ago, photosynthesizing bacteria began to form -
(3.5 billion years ago) Oldest Fossils
• 3500 million years ago, studies show that the oldest fossil formed from that era. -
(2.2 billion years ago) Oxygen Appears
2200 million years ago, oxygen began to appear in the environment, causing damage to all the living tissue -
(1.8 billion years ago) Oldest Eukaryote Fossils
• 18 million years ago, the oldest eukaryotic fossils have been shown from this time period -
(800 million years ago) Major Glaciation Period Begins
• 800 million years ago, the major glaction period began, which in a sort was kinda like the ice age. -
(600 million years ago) Protective Ozone Layer in Space
• 600 million years ago, the protective ozone layer in space began to form -
(480 million years ago) Land Plants
• 480 million years ago, plants and land were able to begin forming -
(400 million years ago) Oxygen Nears Present Day Levels
• Around 400 million years ago, oxygen levels began to near present day levels, allowing much more life to form. -
(350 million years ago) Reptiles
• 350 million years ago were the first signs of reptiles roaming the earth -
(250 million years ago) Permian
• 250 million years ago was the period of the late Triassic when dinosaurs were the most prevalent creature roaming the earth -
(220 million years ago) Mammals
• 220 million years ago, the Permian period began, which was avery important peiod in history due to the creatures that evolved during that time. -
(200 million years ago) Pangaea Starts to Break Apart
• 200 million years ago, pangea began to break apart, Seperating parts of the contenent into differnt hemesphers -
(65 million years ago) End Cretaceous
65 million years ago, the end of the cretaceous period came -
(60 million years ago) Primates
60 million years ago, the first sign of primates were shown, which was, at the time, the most intellegent mammles on the earth -
(5.2 million years ago) Whales
5.2 million years ago, whales were developed, being one of teh ocean's most large creatures. -
(100,000 years ago) Modern Humans
100,00 years ago, humans began to roam the earth, and just as humans supposedly evolved from monkeys - a less intellegent mammle, we are still getting more intellegent as time goes by. -
(100,000 years ago) Late Pleistocene
Large animals became extinct, and smaller ones became more prevelant
