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inquisitivebiologist.com | ||
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ptolemy2.wordpress.com
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| | | | | Phil Salmon Abstract The End-Permian-Triassic extinction (EPTE) is the largest mass extinction in the history of the Phanerozoic - the period of time after the Cambrian 540 million years ago in which multicellular (metazoan) lifeforms have covered the earth. As many as 90% of all metazoan species on land and sea became extinct in this... | |
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www.newscientist.com
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| | | | | The story of evolution spans over 3 billion years and shows how microscopic single-celled organisms transformed Earth and gave rise to complex organisms like animals | |
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www.timboucher.ca
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www.juancole.com
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