a mammalian cheektooth, having a milk precursor. Located between canines and molars in mammalian dentition. Eutherians have maximal 4 premolars in the upper and lower jaw, in bats the first one is always absent.
Fig. 269ve1; PM2-3 are upper premolars
Fig. 269la3 pm2-4 are lower premolars.

Alternative forms for premolar : PM2, pm2, PM3, pm3, PM4, pm4, premolars.