Arenig  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....Wales
 .....Merionethshire Wales
 ......Arenig
RTArenigian
SNTwo 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  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Lower Ordovician
 .....Arenigian
NTBallantrae Complex
RTArenig
 Buchans Group
 San Juan Formation
SNEurope. Above Tremadocian, below Llanvirnian. Before 1978, also search Arenig.