Since the formation of the Earth 4.6 billion years ago, much has happened. The fossil record is quite extensive, especially since the Cambrian explosion, showing a great diversity of life and adaptations over time. Explore the following websites and practice your scientific notation skills in writing out the years.Overview of the Time Periods:
http://www.physci.wsc.ma.edu/young/hgeol/geoinfo/geohistory.html#phanerozoic
More specific details since the Cambrian Explosion:
http://www.ucmp.berkeley.edu/cambrian/camb.html
Fossils from Pre-Cambrian through Tertiary Age:
http://www.fossilmuseum.net/Paleobiology/Precambrian-Fossils.htm
Worksheet:
https://sites.google.com/a/lifescienceswahiawa.com/20102011/home/3rd-quarter/7-5-3-evolution-and-7-5-5-fossils/52TimelineoftheWorldAnswerSheet.pdf?attredirects=0
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