Earth History

The Age of the Earth ,[object Object],[object Object],Image courtesy of NASA, http://en.wikipedia.org/wiki/Image:The_Earth_seen_from_Apollo_17.jpg#file

The earth’s 4.6 billion year history is divided into major units of time: Cenozoic Era Mesozoic Era Paleozoic Era Precambrian Time Image created by Jason Brechko for Lake George Association (Lake George, NY) http://www.lakegeorgeassociation.org/geology_facts.htm

Precambrian Time ,[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College. Image courtesy of http://www.sharkbay.wa.gov.au/tourism/what_to_see_and_do/images/stromatolites_lge.jpg

Paleozoic era ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College. Images courtesy of: http://discover.edventures.com/images/termlib/p/paleozoic/support.gif , http://en.wikipedia.org/wiki/Trilobites

Paleozoic era (continued)… ,[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College. c Image courtesy of http://www.ig.utexas.edu/research/projects/plates/teaching_ideas.htm?PHPSESSID=def1b9

Mesozoic Era ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College. Image courtesy of http://nascarulz.tripod.com/dinomain.html

65 million years before present…. ,[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College. Image courtesy of NASA: http://www.nasaexplores.com/show2_912a.php?id=01-074&gl=912

Cenozoic Era ,[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College. Image courtesy of: http://www.karencarr.com/gallery_Cenozoic_arch.html

And during the Cenozoic era… ,[object Object],[object Object],Image courtesy of: http://www.wilderdom.com/images/evolution/8.jpg

Earth History

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Earth History