-
section showing Crenulation Cleavage within the late
Middle Ordovician (
Llandeilian Stage)
Hendre Shales Formation (Drefach Group) in a
roadside exposure...
- (Tremadocian and Arenig),
Middle (Llanvirn (subdivided into
Abereiddian and
Llandeilian) and Llandeilo) and Late (Caradoc and Ashgill) epochs. The corresponding...
- 4 km thick.
Black shales,
called the
Luarca Slates are
Llanvirnian to
Llandeilian age (middle to
upper Ordovician) and are 0.5 to 1 km thick. The Agüeira...
-
Eckert 1984 D.
pleniramulus Eckert, 1984
Calceocrinidae extinct Silurian (
Llandeilian)
Canada : 23
Diatorocrinus (jun. syn. of Actinocrinites)
Wright 1955...
-
teretiusculus biozone,
Llanfawr Mudstones Formation,
Builth inlier,
Llandeilian Stage of the
Llanvirn Series) and the
Czech Republic (Dobrotiva Formation...
-
chikunensis Kobayashi, 1934
Chikunsan shale (Jigunsan Formation),
South Korea,
Llandeilian (Middle Ordovician) "P".
clarki Shaw, 1966 (=?P.
mobergi Clark, 1924)...
