Table 4 Results of the regressions of natural log OCW (in mm) against natural log body mass (in g)

All species

404

ln(body mass) = 7.69289 × ln(OCW)^2/3 − 8.19502

0.9810

32.03

1.047

31.09

47.69

Therians only

401

ln(body mass) = 7.70727 × ln(OCW)^2/3 − 8.21527

0.9823

31.55

1.037

30.83

45.92

Excluding taxa

374

ln(body mass) = 7.76568 × ln(OCW)^2/3 − 8.36414

0.9862

27.89

1.021

27.47

40.62

All species (N ≥ 6)

170

ln(body mass) = 7.68862 × ln(OCW)^2/3 − 8.18776

0.9785

29.77

1.065

28.69

43.99

All species (N ≥ 6), excluding taxa

160

ln(body mass) = 7.76999 × ln(OCW)^2/3 − 8.2391

0.9815

27.72

1.068

26.56

41.30

All species (N ≥ 10)

75

ln(body mass) = 7.71479 × ln(OCW)^2/3 − 8.19504

0.9901

22.57

1.041

22.53

32.76

All species (N ≥ 10), excluding taxa

73

ln(body mass) = 7.71406 × ln(OCW)^2/3 − 8.21147

0.9916

20.71

1.042

20.66

30.14

Species >  1000 g

232

ln(body mass) = 7.4292 × ln(OCW)^2/3 − 7.5507

0.9526

30.76

1.080

30.04

46.17

Australidelphia

32

ln(body mass) = 8.1213 × ln(OCW)^2/3 − 8.9050

0.9720

31.30

1.025

30.54

47.44

Ungulates

61

ln(body mass) = 7.6451 × ln(OCW)^2/3 − 8.0565

0.9619

27.62

1.057

27.47

39.95

Primates

44

ln(body mass) = 8.2761 × ln(OCW)^2/3 − 9.5675

0.9636

18.75

1.029

18.06

28.41

Rodentia

96

ln(body mass) = 7.8157 × ln(OCW)^2/3 − 8.2573

0.9710

29.35

1.078

29.19

40.80

Sciuromorpha

29

ln(body mass) = 8.2497 × ln(OCW) ^2/3 − 9.1570

0.9726

16.63

1.039

16.45

24.37

Carnivora

81

ln(body mass) = 8.5852 × ln(OCW)^2/3 − 10.2696

0.9750

22.60

1.031

21.96

34.62