Upper and lower arcades showing 

 premolars and molars. 



1 — 1st premolar; 2 — 2nd premolar; 



3 — 3rd premolar; 4 — 1st molar; 



5 — 2nd molar; and 6 — 3rd molar. 



18 months 



V 



\/^^^^- \ n f""" 



19 months 



20 months 



20.5 months 



21 months 



22 months 



23.5 months 



25 months 



Figure 3 — Cattle dental formula. (Adapted from Bovine Practitioner, No. 9-74, 

 and "Incisor Tooth Eruption, Development and Attrition," Texas A&M University.) 



11-3 



