TRIBE METAILURINI

Remarks: Our concept of Metailurini is largely similar to that used by Turner & Antón (1997) and Werdelin et al. (2010), only that we found most species of Paramachaerodus similar to Metailurus, and these two genera are likely to be closely related. Paramachaerodus does not show a closer affinity to Smilodontini than Metailurus does. The two derived species of Paramachaerodus have serrated canines and V-shaped incisors, and are unlikely to be ancestral to Smilodontini . Their positions are in need of further investigation.