File:Phanerozoic Biodiversity.svg
Summary
This image shows the <a href="https://en.wikipedia.org/wiki/biodiversity" class="extiw" title="en:biodiversity">biodiversity</a> during the <a href="https://en.wikipedia.org/wiki/Phanerozoic" class="extiw" title="en:Phanerozoic">Phanerozoic</a>. Note that this is a result of changes in both the rate of extinctions and the rate of new originations. The <a href="https://en.wikipedia.org/wiki/Dresbachian" class="extiw" title="en:Dresbachian">Dresbachian</a> extinction event in particular is obscured by nearly immediate replacement with new genera.
Colour code:
- grey = total known genera from Sepkowski's catalogue (cited by Rohde & Muller)
- green = "well-defined genera", i.e. known genera excluding those represented by "single occurrences" and those whose dates are uncertain.
- red = trend for "well-defined genera". Derived by fitting a third-order polynomial to the data.
- yellow = the "Big Five" mass extinctions.
- blue = other extinction events.
Reference: Rohde, R.A., and Muller, R.A. (2005-03). "<a rel="nofollow" class="external text" href="http://muller.lbl.gov/papers/Rohde-Muller-Nature.pdf">Cycles in fossil diversity</a>". Nature 434: 208-210.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:00, 7 January 2017 | | 784 × 464 (204 KB) | 127.0.0.1 (talk) | <p>This image shows the <a href="https://en.wikipedia.org/wiki/biodiversity" class="extiw" title="en:biodiversity">biodiversity</a> during the <a href="https://en.wikipedia.org/wiki/Phanerozoic" class="extiw" title="en:Phanerozoic">Phanerozoic</a>. Note that this is a result of changes in both the rate of extinctions and the rate of new originations. The <a href="https://en.wikipedia.org/wiki/Dresbachian" class="extiw" title="en:Dresbachian">Dresbachian</a> extinction event in particular is obscured by nearly immediate replacement with new genera. </p> <p>Colour code: </p> <ul> <li>grey = total known genera from Sepkowski's catalogue (cited by Rohde & Muller)</li> <li>green = "well-defined genera", i.e. known genera excluding those represented by "single occurrences" and those whose dates are uncertain.</li> <li>red = trend for "well-defined genera". Derived by fitting a third-order polynomial to the data.</li> <li>yellow = the "Big Five" mass extinctions.</li> <li>blue = other extinction events.</li> </ul> <p>Reference: <cite style="font-style:normal">Rohde, R.A., and Muller, R.A. (2005-03). "<a rel="nofollow" class="external text" href="http://muller.lbl.gov/papers/Rohde-Muller-Nature.pdf">Cycles in fossil diversity</a>". <i>Nature</i> <b>434</b>: 208-210.</cite> </p> |
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