Ulster Museum Trench (UMT), NE of Pomeroy: Rocklandian - Kirkfieldian, United Kingdom
collected 1992
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Dissidocerida
- Geisonoceratidae
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Virgoceras politum
(M'Coy 1851)
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2 specimens | |||||||||
| BELUM K25070, K25071 | ||||||||||
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Cephalopoda
- Orthocerida
- Orthoceratidae
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"Orthoceras" sp.
Breynius 1832
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1 specimen | |||||||||
| BELUM K24521 | ||||||||||
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Cephalopoda
- Orthocerida
- Proteoceratidae
|
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Gorbyoceras bilineatum
|
1 specimen | |||||||||
| BELUM K25072 | ||||||||||
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Cephalopoda
- Oncocerida
- Diestoceratidae
|
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Diestoceras approximatum
(M'Coy 1846)
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1 specimen | |||||||||
| BELUM K25080 (also designated as K25081) | ||||||||||
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Cephalopoda
- Apsidoceratidae
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? Fremontoceras cf. jewetti
Flower 1947
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1 specimen | |||||||||
| BELUM K24525 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | Northern Ireland | County: | Tyrone (Cookstown District) |
| Coordinates: | 54.6° North, 6.9° West (view map) | ||||
| Paleocoordinates: | 21.5° South, 30.1° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Rocklandian - Kirkfieldian | ||
| Age range of interval: | 457.00000 - 449.80000 m.y. ago |
Stratigraphy
| Formation: | Bardahessiagh | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: The fossils come from unknown positions within the Bardahessiagh Formation (always spelled "Bardahessaigh Formation" by Evans, 1993). According to fig. 2 in Evans (1993) the Bardahessiagh Fm. spans the Rocklandian and Kirkfieldian stages. | |||||
Lithology and environment
| Primary lithology: | fine,micaceous,gray sandstone |
| Lithology description: "The Bardahessaigh Formation was described by Mitchell (1977) as 'grey, fine-grained, micaceous sandstones and rarely corse conglomerates' [...]." | |
| Environment: | coastal indet. |
Taphonomy
| Modes of preservation: | cast |
| Size of fossils: | macrofossils |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | bulk,surface (float),surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis | Collection dates: | 1992 |
| Collection method comments: BELUM = Ulster Museum, Belfast
Fossils are collected from an excavation site called Ulster Museum Trench, opened in 1992, "aligned north-south on a south-facing slope and cutting down through drift to bedrock" (Evans, 1993). The length of the trench was 33 m. | |
Metadata
| Also known as: | unknown horizons of Bardahessiagh Fm; Pomeroy inlier; Craigbardahessiagh | ||
| Database number: | 89153 | ||
| Authorizer: | B. Kröger | Enterer: | T. Liebrecht |
| Modifier: | T. Liebrecht | Research group: | marine invertebrate |
| Collections that are a subset of this one: | |||
| Created: | 2009-05-07 11:37:20 | Last modified: | 2009-05-13 08:32:12 |
| Access level: | the public | Released: | 2009-05-07 11:37:20 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 29909. | D. H. Evans. 1994. The Cephalopod Fauna of the Bardahessaigh Formation (Caradoc Series) of Pomeroy, County Tyrone. Irish Journal of Earth Sciences 13:11-29 [B. Kröger/T. Liebrecht/T. Liebrecht] |