Supplement 1. Data on skull length for 44 species of carnivores and sources for the data used in Table 3.

File List CarnSkulldata.csv Description The file contains data on correlations among skull size and latitude for 44 species of carnivore. Column definitions 1 = species name 2 = species common name 3 = sex, male or female 4 = latitudinal range for sampled skulls of each species by sex 5 = minimum latitude for each species natural range 6 = maximum latitude for each species natural range 7 = sample size by sex 8 = Spearman’s rho coefficient for latitude and condylobasal skull length for each species by sex 9 = P value for Spearman’s rho for each species by sex