Table 2. Measurements from the Age Reference Point to the mesial end of the dental alveolus made on African elephants in Zimbabwean populations.
Molars* | Age (y) | Male Mean ± SD | n | Female Mean ± SD | n | Between sex p-value |
---|---|---|---|---|---|---|
M1 | 0–0.9 | 13.3 ± 0.25 | 2 | 12.9 ± 0.15 | 3 | 0.130 |
M2 | 1–1.8 | 14.3 ± 1.00 | 7 | 13.3 ± 0.58 | 6 | 0.053 |
M3 | 2–6.5 | 19.8 ± 1.80 | 18 | 18.5 ± 2.39 | 11 | 0.118 |
M4# | 7–15 | 22.2 ± 0.25 | 4 | 22.3 ± 3.08 | 30 | 0.920 |
M5 | 16–28.5 | 28.2 ± 1.74 | 17 | 26.5 ± 1.24 | 40 | <0.001 |
M6 | 29–70+ | 31.5 ± 1.26 | 70 | 28.1 ± 1.23 | 47 | <0.001 |
With the exception of between M1 and M2 group, significant differences (<0.001) were found between all molar male groups, all molar female groups and molar groups including totals of both male and female.
*For example, from M1L1 to M1L5 for Molar 1. For molar 2, M2L1 to M2L7. And so on for the other molars.
# All 4 males were 7–8 years of age while the females range from 7–15 years.