- into
Early (Tremadocian and Arenig),
Middle (Llanvirn (subdivided into
Abereiddian and Llandeilian) and Llandeilo) and Late (Caradoc and Ashgill) epochs...
- 1822, from the
Meadowtown Formation,
Llandeilo Group,
Middleton Series,
Abereiddian Stage, Meadowtown, Shropshire.
Length 8.5 cm.
Scientific classification...
- ± 2.0 171.6 ± 3.0 age Jur****ic ICS
Aalen (Germany) Mayer-Eymar, 1864
Abereiddian 471.8 ± 1.6 464 age
Ordovician regional Abereiddy (Wales)
Fortey et al...
-
Orogeny Greywackes, shales,
siltstones and
mudstones with conglomerates.
Abereiddian Age to
Ashgill Epoch The south-eastern
boundary is the
Orlock Bridge...
