Table 1.
Estimates of Iw and β for portions of mammalian phylogeny. n = number of informative nodes. Significance of departure from the equal-rates Markov expectation is assessed by weighted t-test for Iw and from 1000 parametric bootstrap replicates for β. 95% CI, confidence interval for β from bootstrapping.
| clade | n | Iw ± s.e. | β | 95% CI |
|---|---|---|---|---|
| Mammalia | 925 | 0.631 ± 0.013*** | −0.857*** | −0.974 to −0.710 |
| Marsupialia | 110 | 0.650 ± 0.038*** | −0.904*** | −1.215 to −0.392 |
| Eutheria | 812 | 0.627 ± 0.014*** | −0.847*** | −0.985 to −0.684 |
| Afrotheria | 15 | 0.657 ± 0.090 | −0.878 | −1.671 to 6.113 |
| Xenarthra | 7 | 0.420 ± 0.160 | 7.264 | −2.000 to >500 |
| Laurasiatheria | 398 | 0.603 ± 0.020*** | −0.765*** | −0.955 to −0.498 |
| Euarchontoglires | 389 | 0.653 ± 0.020*** | −0.938*** | −1.110 to −0.731 |
| Carnivora: supertree | 108 | 0.590 ± 0.040 | −0.752*** | −1.104 to −0.137 |
| Carnivora: cyt b tree | 140 | 0.672 ± 0.033 | −1.102*** | −1.276 to −0.855 |
| Cetartiodactyla: supertree | 69 | 0.616 ± 0.032 | −0.770 | −1.216 to 0.014 |
| Cetartiodactyla: cyt b tree | 148 | 0.662 ± 0.032 | −1.002*** | −1.186 to −0.732 |
*p < 0.05; **p < 0.01, ***p < 0.001.