Amphimachairodus Kretzoi, 1929

Jiangzuo, Qigao, Werdelin, Lars, Sanisidro, Oscar, Yang, Rong, Fu, Jiao, Li, Shijie, Wang, Shiqi & Deng, Tao, 2023, Origin of adaptations to open environments and social behaviour in sabretoothed cats from the northeastern border of the Tibetan Plateau, Proceedings of the Royal Society B: Biological Sciences (20230019) 290 (1997), pp. 1-11 : 1992

Amphimachairodus Kretzoi, 1929

Diagnosis: machairotont of large size. Rostrum long, and forehead wide. Orbit anterior border located at P4. Glenoid fossa overhung above basicranium. Mastoid process large, and paroccipital moderate to highly reduced. Mandibular flange weak or moderate, cornoid process small. Incisors large with serration, and upper I1 and I2 with laterally posited accessory cusps. P2 variably present. P3 with distinct anterior accessory cusp. P4 with distinct preparastyle and moderate to very small protocone. m1 with metaconid-talonid complex mostly absent.

Included species: Amphimachairodus giganteus (Wagner, 1848) , Amphimachairodus horribilis (Schlosser, 1903) , Amphimachairodus palanderi (Zdansky, 1924) , Amphimachairodus coloradensis (Cook, 1922) , Amphimachairodus aloarezi Ruiz-Ramoni et al. 2019 and Amphimachairodus hezhengensis sp. nov.