| Taxa | Adjusted R2 = (n=) | p = | Slope |
| Class Mammalia | −0.003 (270) | 0.815 |
|
| Infra-class Marsupialia | −0.047 (18) | 0.629 |
|
| Infra-class Eutheria (Placentalia) | −0.004 (250) | 0.936 |
|
| Within Infra-class Eutheria (Placentalia) |
|
|
|
| Super-order Afrotheria | 0.183 (5) | 0.219 |
|
| Super-order Euarchonta | 0.480 (38) | 8.62E−07 | −2.33 |
| Super-order Glires | 0.049 (38) | 0.096 |
|
| Super-order Laurasiatheria | −0.006 (163) | 0.878 |
|
| Super-order Xenoarthra | −0.245 (6) | 0.906 |
|
| Within Laurasiatheria |
|
|
|
| Order Carnivora | 0.081 (59) | 0.016 | −0.74 |
| Order Cetartiodactyla | −0.013 (76) | 0.871 |
|
| Order Chiroptera | 0.209 (8) | 0.209 |
|
| Order Perissodactyla | 0.235 (14) | 0.045 | −1.12 |
| Within Super-order Glires |
|
|
|
| Order Rodentia | −0.018 (34) | 0.532 |
|
| Within Super-order Euarchonta |
|
|
|
| Primates | 0.480 (38) | 8.62E−07 | −2.33 |
| Within Primates |
|
|
|
| Sub-order Strepsirhini | 0.0075 (9) | 0.337 |
|
| Sub-order Haplorhini | 0.597 (29) | 5.56E−07 | −2.69 |