Figure 5 in Diegoaelurus, a new machaeroidine (Oxyaenidae) from the Santiago Formation (late Uintan) of southern California and the relationships of Machaeroidinae, the oldest group of sabertooth mammals

Figure 5 Radiograph of the left dentary of Diegoaelurus vanvalkenburghae sp. nov. (SDSNH 38343). Note the absence of alveoli in the expected position of p4 (arrow) indicating that the tooth was either pathologically absent or that loss occurred well antemortem. Scale bar is 1 cm. Full-size DOI: 10.7717/peerj.13032/fig-5