English: This image shows the marine biodiversity during the Phanerozoic. Note that this is a result of changes in both the rate of extinctions and the rate of new originations. The Dresbachian extinction event in particular is obscured by nearly immediate replacement with new genera.

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• 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". Dereived by fitting a third-order polynomial to the data.
• yellow: the "Big Five" mass extinctions.
• blue: other extinction events.

Reference: Rohde, R.A., Muller, R.A., Cycles in fossil diversity, March 2005, Nature, volume 434, pgs 208–210, url:http://muller.lbl.gov/papers/Rohde-Muller-Nature.pdf, doi:10.1038/nature03339, issue:7030, pmid:15758998