Global Diversity Patterns are Explained by Diversification Rates and Dispersal at Ancient, Not Shallow, Timescales.

We found only a single barely significant ( r 2 = 0.054; P = 0.046) relationship among 24 comparisons of these climatic variables and diversification rates among families using phylogenetic regression analyses ( Supplementary Appendix S5 and Supplementary Table S6 ).

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