Fig. 10. Natalid bat Natalus tumidirostris Miller, 1900 in Carnassiform notches improve the functional efficiency of bat molar shearing crests

Fig. 10. Natalid bat Natalus tumidirostris Miller, 1900 (USNM 455974) from Venezuela, Recent. Left lower molars showing blocky or step-like carnassiform notches on m1–m3; anterolabial view (A1) showing the notches in the cristids obliqua (arrows); posterolabial view (A2) showing the notches in the postcristids (arrows); occlusal view (A3, stereopair) showing the carnassiform notches (arrows). Note how the rather angular accessory troughs accompanying the notches join within the talonid basins to form a V-shaped trench.