TABLE 6. Measurements of dentine tracts (in mm) of cheek teeth of Prodipodomys from the early Blancan Panaca local fauna. N=number of specimens, M=mean, SD=standard deviation, CV=coefficient of variation, OR=observed range.

Tooth

N

M

SD

CV

OR

Prodipodomys minor:

P4

4

0.32

0.065

20.41

0.24-0.40

M1

9

0.61

0.166

27.24

0.40-0.88

M2

4

0.42

0.192

45.67

0.20-0.60

M3

11

0.05

0.067

141.93

0.00-0.20

p4

4

0.17

0.115

66.50

0.00-0.28

m1

8

0.53

0.222

41.86

0.20-0.84

m2

11

0.37

0.119

31.78

0.20-0.64

m3

3

0.00

0.000

0.00

0.00-0.00

Prodipodomys tiheni:

P4

12

0.36

0.111

30.70

0.20-0.48

M1

12

0.81

0.049

6.05

0.72-0.92

M2

9

0.52

0.194

37.70

0.40-1.00

M3

3

0.27

0.456

166.87

0.00-0.80

p4

6

0.56

0.181

32.26

0.20-0.68

m1

7

0.78

0.056

7.19

0.68-0.84

m2

8

0.55

0.070

12.75

0.44-0.64

m3

10

0.13

0.150

119.32

0.00-0.32