Geological Timescale

Geological Timescale - Geological Timescale Here you can...

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Geological Timescale Here you can see the main events that occurred in the different geologic periods. The oldest period is at the bottom, because the oldest layers are also at the bottom. We now live in the Holocene, part of the Neogene period. The main classification is the "Era", the subdivisions are the "Periods". You can click on the fossilnames for more explanation. ERA PERIOD Age (in millions of years) Events: Cenozoic Neogene 0 - 23 The primates and humanoids developed in the upper Neogene. Paleogene 23 - 66 In the Paleogene period a fast development of mammals and birds occurred. Mesozoic Cretaceous 66 - 144 The dinosaurs became extinct at the end of the Cretaceous period almost certainly because of a large meteorite impact. Ammonites were flourishing during the Cretaceous, but they also became extinct. Mammals and flowering plants began developing. Jurassic 144 - 208 This is the time of the large reptiles. Many species of dinosaurs developed. Also flying dinosaurs, like the Archaeopteryx
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This note was uploaded on 11/22/2011 for the course GLY GLY1100 taught by Professor Jaymuza during the Spring '10 term at Broward College.

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Geological Timescale - Geological Timescale Here you can...

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