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. 2007 Aug 22;2(8):e759. doi: 10.1371/journal.pone.0000759

Figure 1. Re-analysis of the detrended total fossil biodiversity data used by [1] with LS.

Figure 1

Analysis used AutoSignal with significance levels computed assuming Gaussian fluctuations and lines denote 0.1, 0.05, and 0.01 levels of significance. Frequencies are given in per Myr; there is a peak at a frequency of approximately 0.0162/Myr which is equivalent to 61.9±3.4 Myr; that peak is significant at the .01 level. All other significant peaks occur at less than 15 Myr and thus are near or below the Nyquist frequency.