The sites i used were http://www.ucmp.berkeley.edu/education/explorations/tours/geotime/gtpage1.html
The title of this site is called Geologic Time. It showed the different stages of geologic time and was about what eras and periods were.
The second site i used was
http://www.UCMP.berkely.edu/help/timeform.html
The title of this site was UCMP Web Time Machine. It was about how epoches work and also had a geologic time scale.
The era known as the age of the dinosaurs is the mesozic era. The carboniferous period in the palezoic is famous for coal swamps. The ordovian period was the first after the explosion of life. Modern humans first appeared in the epoch of Pleistocene. The event that marked the end of the Mesozoic ERa was a major extinction of dinosaurs. The last Ice ages in Michigan happened during the epoch of Pleistocene. The order of longest to shortest time periods are from era, period then epoch.
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