Figure 2
Photomicrographs of selected fossil tooth enamel and mesowear features. (A) Photographs at ×500 of two P. ginsburgi specimens (scale bar 200 μm). Intensive scratching (1) is probably justifiable as a consequence of the consumption of fresh grasses in a wet season while the intensive pitting (2) suggests a likely intake of browse (fruits, hard seeds) during a dry season. Large pitting seen in both forms of microwear is consistent with the exogenous particle encroachment on food items during the whole year (a pit is defined as large when its maximum diameter exceeds 15 μm). (B) Mesowear features. Low relief and blunt cusps (1;MPZ-2007/7-m1; partially broken). High relief and sharp cusps (2;MPZ-6328-M3 and 3;MPZ-6326-M3). High relief and rounded cusps (4;MPZ-6353-m2, 5;MPZ-6311-M1 and 6;MPZ-2007/6-m1). Scale bar 1 cm.