|
|---|
| Quaternary | Holocene | Meghalayan | | Saintaugustinean | 0 |
| Santarosean | 0.0004 |
| Northgrippian | 0.0042 |
| Greenlandian | 0.0082 |
| Pleistocene | Late Pleistocene | Sheridanian | 0.0117 |
| Rancholabrean | 0.014 |
| Chibanian | 0.129 |
| Cudahyan/Sappan | Irvingtonian | 0.21 |
| Calabrian | 0.774 |
| Senecan/Rexroadian | Blancan | 1.4 |
| Gelasian | 1.8 |
| Neogene | Pliocene | Piacenzian | 2.58 |
| Zanclean | 3.6 |
| Late Hemphillian/late Early Hemphillian/early Early Hemphillian | Hemphillian | 4.7 |
| Miocene | Messinian | 5.333 |
| Tortonian | 7.246 |
| Late Clarendonian/Early Clarendonian | Clarendonian | 9.4 |
| Serravallian | 11.63 |
| late Late Barstovian/early Late Barstovian/Early Barstovian | Barstovian | 12.5 |
| Langhian | 13.82 |
| Burdigalian | 15.98 |
| Late Hemingfordian/Early Hemingfordian | Hemingfordian | 16.3 |
| late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean/Harrisonian | Arikareean | 18.5 |
| Aquitanian | 20.44 |
| | | | | 23.03 * |
| 23.1 |
| 29.5 |