Glyn Ceiriog, Plas Uchaf Fm.: Hirnantian, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Strophomenida - Leptostrophiidae
Eostropheodonta hirnantensis (M'Coy 1851)
Strophomenata - Orthotetida - Triplesiidae
Cliftonia sp. Foerste 1909
Rhynchonellata - Orthida - Draboviidae
Hirnantia ? sagittifera (McCoy 1851)
see common names

Geography
Country:United Kingdom State/province:Wales
Coordinates: 52.9° North, 3.2° West (view map)
Paleocoordinates:38.1° South, 16.6° West
Geographic resolution:local area
Time
Period: Ordovician Epoch: Late Ordovician
Stage: Hirnantian 10 m.y. bin: Ordovician 5
*Epoch:Ashgill
Key time interval: Hirnantian
Age range of interval: 445.2 - 443.8 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Plas Uchaf
Stratigraphic resolution:group of beds
Stratigraphy comments: total thickness ~15 m
Lithology and environment
Primary lithology:bioturbation lithified argillaceous,sandy sandstone
Secondary lithology: siltstone
Lithology description: massive, cleaved sandstone...plane-bedded, laminated, micaceous muddy siltstone w/ bioturbation, ripple lamination...micaceous sandy mudstone.
Environment:offshore
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:8294
Authorizer:J. Alroy Enterer:M. Sommers
Research group:marine invertebrate
Created:2000-07-05 13:27:41 Last modified:2000-07-05 16:27:41
Access level:the public Released:2000-11-20 13:53:37
Creative Commons license:CC BY
Reference information

Primary reference:
569. N. Hiller. 1981. The Ashgill rocks of the Glyn Ceirog district, North Wales. Geological Journal 16:181-200 [J. Alroy/M. Sommers/M. Uhen]