- cut
across it. It is
especially visible in the
cliffs of
Graig Goch.
Harnagian-Soudleyan
trilobites have been
found in the
rocks of the
Ceiswyn Formation...
-
Holocene California Haranoyan 18.2 15.97 age
Miocene ****an Ikebe, 1977
Harnagian 459 458 age
Ordovician regional Bancroft, 1929
Harrisonian 24.8 20.6 age...
-
Flexicalymene acantha Bancroft, 1949, from the
Harnage Shale Formation (
Harnagian Stage), near Horderley, Shropshire, England.
Flexicalymene incerta Barrande...
- 386).
Gravicalymene praecox Bancroft, 1949, from the
Smeathen Wood Beds (
Harnagian Stage,
Reuscholithus reuschi Biozone) near Horderley, Wistanstow, Shropshire...
- [Family:Trinucleidae]. Type species:
Trinucleus Caractaci Murchison, 1839.
Harnagian, Welshpool, Powys, Wales.
Salterocoryphe salteri (Rouault, 1851) [Family:...
