Fig. 2.

Modern Δ₄₇–temperature calibration from wild-caught and aquarium-reared elasmobranch teeth, along with wild-caught bony fish and mammals. Lines indicate linear regressions calculated from our data (orange line and colored symbols) along with that of Anderson et al. (47) (blue line). Shaded regions surrounding regression lines indicate 95% CI. Error bars in the x and y directions on symbols indicate uncertainty in temperature and one external SE of the average Δ₄₇, respectively. Uncertainty in regression parameters indicates one SE.