Table 2 Names of fossils used to calibrate the tree, with the respective exponential prior parameters used
| Fossil name | Hard lower bound (Ma) | Soft upper bound 95% (Ma) | Exponential mean (uncertainty) |
|---|---|---|---|
| Sabalites carolinensis | 85.8 | 88.8 | 1 |
| Mauritiidites | 65 | 69.49 | 1.5 |
| Attaleinae | 54.8 | 60.79 | 2 |
| Hyphaene kapelmanii | 27 | 28.5 | 0.5 |