Figure 5
From: Evolution of Old World Equus and origin of the zebra-ass clade

Mandible morphological comparison of E. simplicidens (USNM12573 and USNM12522, (a,b), E. stenonis (NHML20.163361 and IGF560, (c,d), and E. grevyi (USNM163228 and USNM182063 (e,f). Scale bar 10Â cm.