Fig. 1.

Climatic profile of palms (median, quartile, and maximum and minimum values), with an emphasis on cold tolerant clades (principally Coryphoids). (A) MAT profiles of selected extant palm taxa. (B) CMMT profiles of selected extant palm taxa with key thresholds for megathermal (tropical) climates and for palms: CMMT >5 °C for modern palms (with few exceptions: Two outlier occurrences shown as dots are for W. filifera) (3); CMMT >8 °C for palms under Eocene levels of atmospheric CO₂ (10). Systematics follows Baker et al. (43).