Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Spathian  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Triassic | |
| ....Lower Triassic | |
| .....Spathian | |
| SN | North America. Upper Lower Triassic. Above Smithian; below Middle Triassic. Added to Thesaurus in 1989. |