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. 2008 Mar 17;105(12):4786–4791. doi: 10.1073/pnas.0709378105

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© 2008 by The National Academy of Sciences of the USA

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Fig. 2. — Regression analysis of limb diversity through the Phanerozoic, based on fossil origination times of 66 free-living crustacean orders. (A) Brillouin tagmosis value (R² = 0.250, P < 0.0001). (B) Total limb number (R² = 0.00046, P = 0.865). (C) Number of limb types (R² = 0.322, P < 0.0001). (D) Number of limb types per limb (R² = 0.049, P = 0.074). (E) Average disparity per limb (R² = 0.091, P = 0.014). (F) Total disparity across all limbs (R² = 0.291, P < 0.0001). For full regression statistics, see SI Appendix B.