Extended Data Fig. 3: Ordinary least squares regressions between estimated percentage of grass cover and mean mesowear angle of proboscidean guild within localities.
From: Fluctuating climate and dietary innovation drove ratcheted evolution of proboscidean dental traits
a) Mean mesowear angle of all proboscideans (including deinotheres) within localities (n = 27, R2 = 0.63, p = 0.0000008) and b) mean mesowear angle of elephantoid proboscideans only, that is excluding deinotheres (n = 27, R2 = 0.70, p = 0.00000004). Both show significant positive correlations between mean mesowear of proboscideans and estimated grass percentage. 95 % confidence limits of fit are indicated as dashed curves in figures a and b.
