- Zone,
Shineton Shale, Shineton, Shropshire;
Bergamia rushtoni biozone,
Pontyfeni Formation, Whitland,
Carmarthen District, Wales),
Argentina (Tremadoc...
- and Opsimasaphus-Nankinolithus
trilobite ****ociation, 53.0° N, 3.0° W;
Pontyfeni Formation, B.
rushtoni and
Stapeleyella abyfrons biozone, Whitland, 52...