haplodont

hap·lo·dont

(hap'lō-dont),
Having molar teeth with simple crowns, that is, simple conic teeth without ridges or tubercles.
[haplo- + G. odous, tooth]

haplodont

(hăp′lō-dŏnt) [″ + odous, tooth]
Having teeth without ridges or tubercles on the crown.