The History of the Earth By AshJulian Jan 1, 2015 4.6 billion years The foramation of Earth. Mar 3, 2015 3,500 million years First singled celled organism appeared Nov 11, 2015 650 million years The first time a multicellular organism appeared. Nov 16, 2015 542 million years cambrian expolsion Dec 10, 2015 231 million years first dinosaurs evolve. Dec 24, 2015 66 million years extinction of dinosaurs Dec 31, 2015 400,000 to 200,000 years first humans evolve.
