Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Ypresian  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....Ypresian | |
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....lower Eocene | |
| ......Ypresian | |
| NT | London Clay |
| SN | Europe. Above Thanetian (Paleocene), below Cuisian. |