Table 1.
Probability of baculum presence or absence at the root and six nodes of the mammalian phylogeny (see electronic supplementary material, figure S1, for nodes). Probabilities of baculum presence or absence of ancestral primates and carnivores are also given.
| baculum absent |
baculum present |
|||
|---|---|---|---|---|
| mean probability | s.e. | mean probability | s.e. | |
| root | 0.98 | 0.0011 | 0.02 | 0.0011 |
| node 1 | 0.93 | 0.0020 | 0.07 | 0.0020 |
| node 2 | 0.51 | 0.0016 | 0.49 | 0.0016 |
| node 3 | 1.00 | 0.0000 | 0.00 | 0.0000 |
| node 4 | 0.01 | 0.0000 | 0.99 | 0.0000 |
| node 5 | 0.3 | 0.0010 | 0.7 | 0.0010 |
| node 6 | 0.01 | 0.0000 | 0.99 | 0.0000 |
| primates | 0.00 | 0.0000 | 1.00 | 0.0000 |
| carnivores | 0.00 | 0.0000 | 1.00 | 0.0000 |