Table 46  Animal bone: dental ageing data, by phase, for (A) sheep and (B) pig. The data for sheep are grouped, the letters in parentheses represent Payne's 1974 stages. The suggested ages are as follows:
  Stage 1. 0-6 months
  Stage 2. 6-12 months
  Stage 3. 1-2 years
  Stage 4. 2-4 years
  Stage 5. 4-8 years
  Stage 6. 8-10 years.
For the pig data, the numbers in parentheses represent Grant's 1988 age stages. The  groups are as follows:
  Stage 1. M1 unworn
  Stage 2. M1 in wear, M2 unworn
  Stage 3. M2 in wear, M3 unworn
  Stage 4. M3 in wear
  Stage 5. M3 in heavy wear