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Conservation Biology and Biodiversity
The Biodiversity Crisis
Biology Textbooks Boundless Biology Conservation Biology and Biodiversity The Biodiversity Crisis
Biology Textbooks Boundless Biology Conservation Biology and Biodiversity
Biology Textbooks Boundless Biology
Biology Textbooks
Biology
Concept Version 7
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Biodiversity Change through Geological Time

Fossil record

Fossil record

Extinction occurrences, as reflected in the fossil record, have fluctuated throughout earth's history. Sudden and dramatic losses of biodiversity, called mass extinctions, have occurred five times.

Source

    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "OpenStax College, The Biodiversity Crisis. October 17, 2013."
    http://cnx.org/content/m44892/latest/Figure_47_01_04.jpg OpenStax CNX CC BY 3.0.

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