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The Cambrian Period marks an important point in the history of life on earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion", because of the relatively short time over ... The Cambrian Period is part of the Paleozoic Era.
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www.ucmp.berkeley.edu/cambrian/camb.html
www.ucmp.berkeley.edu/cambrian/camb.html
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Cambrian: the beginning of the Paleozoic Era. ... Animals with hard-shells appeared in great numbers for the first time during the Cambrian. The continents were flooded by shallow seas. The supercontinent of Gondwana had just formed and was located near the South Pole.
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www.scotese.com/newpage12.htm
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The Cambrian Period marks the beginning of the Paleozoic Era. This period gets its name from a place in Wales where the first examples of this type of ancient life was found. ... The Cambrian Period marks the beginning of the Paleozoic Era. This period gets its name from a place in Wales where the first examples of this type...
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www.fossils-facts-and-finds.com/cambrian_period.html
www.fossils-facts-and-finds.com/cambrian_period.html
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The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known. The Cambrian Explosion saw an incredible diversity of life emerge, including many major animal groups alive today.
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science.nationalgeographic.com/science/prehistoric-worl...
science.nationalgeographic.com/science/prehistoric-world/cambrian.html
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This stunning and unique evolutionary flowering is termed the "Cambrian explosion," taking the name of the geological age in whose early part it occurred. But it was not as rapid as an explosion: the changes seems to have happened in a range of about 30 million years, and some stages took 5 to 10 million years.
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www.pbs.org/wgbh/evolution/library/03/4/l_034_02.html
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The Cambrian explosion is still hotly debated between creationists and evolutionists, ... Marc; I'm very aware of the debate on the theory of the era. Yet I think that draws some interesting points to what's happening in the social space --years from now we'll also scratch our heads based on some of the ridiculous startups...
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www.web-strategist.com/blog/2009/05/17/cambrian-era-and...
www.web-strategist.com/blog/2009/05/17/cambrian-era-and-culling-and-evolution-of-social-media-startups/
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2.5 billion to 500 million years ago, an era in which photosynthetic cyanobacteria produced atmospheric oxygen. The era preceding the Cambrian, when there was a period of accelerated evolution...
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www.nikon.com/about/feelnikon/light/chap02/words_sec01....
www.nikon.com/about/feelnikon/light/chap02/words_sec01.htm
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At the beginning of the Cambrian Period, about 542 million years ago, there were sea creatures like hydras, jellyfish, sponges and seaweed living in the oceans, but only one-celled algae on land yet. ... Tracks of a small beetle. The lines are from it dragging its tail between its legs. Cambrian period sandstone.
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www.historyforkids.org/scienceforkids/geology/eras/camb...
www.historyforkids.org/scienceforkids/geology/eras/cambrian.htm
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Their fossil record goes back to the Cambrian, where they appear with essentially modern forms. A new research paper documents "an exquisitely preserved late-stage embryo of a ctenophore ("comb jelly")" in sediments that are right at the base of the Cambrian.
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www.arn.org/blogs/index.php/literature/2007/04/04/the_e...
www.arn.org/blogs/index.php/literature/2007/04/04/the_earliest_fossil_evidence_of_comb_jel
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