P-values for tests of significant differences between individual genus-area linear regression slopes.

<p>Comparison of regression lines was performed using ANCOVA, with a Bonferroni corrected alpha value of 0.0008. Regressions (shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0040472#pone-0040472-g006" target="_blank">Fig. 6</a>) that are significantly different are bolded. Each regression is labeled by PaleoDB time bin, 5–8, and with an “E” for the European Epicontinental Sea, an “N” for the North American Cretaceous Interior Seaway or a “G” for the Gulf Coast.