TABLE 3. Measurements (in mm) of Microtus pennsylvancus first lower molars from Golliher B. N = number of specimens, s = standard deviation, O.R. = observed range.

 

 

N

Mean

s

O.R.

 

Length m1

47

2.97

0.19

2.55-3.51

 

Width m1

48

1.14

0.07

0.96-1.36