| This age is part of | |
|---|---|
| Phanerozoic | 542 - recent |
| Cenozoic | 65.5 - recent |
| Tertiary | 65.5 - 1.806 |
| Paleogene | 65.5 - 23.03 |
| This age is subdivided to | |
|---|---|
| Upper Paleocene | 58.7 - 55.8 |
| Middle Paleocene | 61.7 - 58.7 |
| Lower Paleocene | 65.5 - 61.7 |
| Number of records | |
|---|---|
| Taxa | 243 |