Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Arenig  | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Wales | |
| .....Merionethshire Wales | |
| ......Arenig | |
| RT | Arenigian |
| SN | Two mountains in N Merionethshire (Gwynedd) in N Wales. One is called Arenig Fach and the other Arenig Fawr. For the age term, see Arenigian. |
| Arenigian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Lower Ordovician | |
| .....Arenigian | |
| NT | Ballantrae Complex |
| RT | Arenig |
| Buchans Group | |
| San Juan Formation | |
| SN | Europe. Above Tremadocian, below Llanvirnian. Before 1978, also search Arenig. |