具P3；颊齿齿冠低，主尖明显，但不膨大，齿凹开阔；
P3 present cheek teeth lower crowned , with distinct but not swollen main cusps and broad sinuses ;
马属颊齿长宽关系的分析
Length and breadth relationship in the cheek teeth of Equus
猕猴颊齿大小的性差研究初报
Preliminary Study on Sexual Dimorphism of the Cheek Teeth Size in Macaca mulatta
颊齿