Extended Data Fig. 2: Mean mesowear angles of selected proboscidean populations from East African Miocene localities.
From: Fluctuating climate and dietary innovation drove ratcheted evolution of proboscidean dental traits
Mean mesowear angles of selected proboscidean populations from East African Miocene localities, with two-sided pairwise Wilcoxon tests. Symbols show mean mesowear angle of each specimen; diamonds show population mean (central line) and 95% confidence interval (upper & lower line). Localities arranged left to right in approximate order from oldest to youngest. The dashed line indicates tentative threshold value of mean mesowear angle (106°) separating browsers (<10% grass in diet) from mixed-feeders and grazers ( > 10% grass in diet). Statistically significantly different p-values are indicated for selected population pairs.
