SFigS4_Length_Phylorate_PA

Supplementary Figure S4. Phylorate plot of phenotypic (body length) evolution rates through time using the “pruned-after” MCC tree. (a) Phylorate plot of the mean phenotypic evolutionary rate of body length across all shift configurations based the MCC phylogeny. (b–d) Phylorate plots of 4 distinct shift configurations with the highest posterior probability. Rate shifts, shown as red circles with sizes proportional to the marginal probability of the shift, demonstrate significant increase in evolutionary rate. 3 distinct shift configurations account for the majority of the posterior probability of the data but result in conflicting rate configurations. The most frequent shift configuration (f = 0.35) signifies no rate shift (b) whereas the second most frequent shift configuration (f = 0.33) indicates an increase in evolutionary rate at the node leading to the divergence of Ictonychinae, Mustelinae, and Lutrinae (c). Conversely, the third most frequent shift configuration (f = 0.16) reveals a rate shift at the root of Mustelidae (d).