Onny Valley: Actonian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Ostracoda
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Ostracoda indet.
Latreille 1802
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| "Smooth" | ||||||||||
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Trilobita
- Phacopida
- Pterygometopidae
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Chasmops extensus
(Boeck 1838)
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| recombined as Toxochasmops (Toxochasmops) extensus | ||||||||||
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Trilobita
- Phacopida
- Calymenidae
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Flexicalymene laticeps
Bancroft 1949
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| recombined as Onnicalymene laticeps | ||||||||||
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Trilobita
- Asaphida
- Remopleurididae
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Remopleurides latus
Olin 1906
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| "onniensis" | ||||||||||
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Trilobita
- Trinucleida
- Raphiophoridae
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Ampyxella edgelli
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Lonchodomas pennatus
Latouche 1884
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras cf. subundulatum
Portlock 1843
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| recombined as Imbricatoceras subundulatum | ||||||||||
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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Gastropoda
- Bellerophontida
- Bellerophontidae
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Cymbularia sp.
Koken 1896
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Gastropoda
- Bellerophontida
- Bucaniidae
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Kokenospira sp.
Bassler 1915
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Bivalvia
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Bivalvia indet.
Linnaeus 1758
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Palaeonucula sp.
Quenstedt 1930
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= Bivalvia informal ?Nuculoidea
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Hendy 2008 | |||||||||
| Palaeonucula = Triassic-Jurassic | ||||||||||
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Bivalvia
- Nuculanida
- Cucullellidae
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Nuculites planulatus
Conrad 1841
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Bivalvia
- Nuculanida
- Malletiidae
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Praearca sp.
Neumayr 1891
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| synonym of Sluha | ||||||||||
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Bivalvia
- Nuculida
- Praenuculidae
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Similodonta sp.
Soot-Ryen 1964
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Bivalvia
- Actinodontida
- Cycloconchidae
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Cycloconchidae indet.
Ulrich 1884
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Rhynchonellata
- Orthida
- Hesperorthidae
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Dolerorthis virgata
(de Sowerby and Murchison 1839)
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| recombined as Dolerorthis intercostata | ||||||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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Cryptothyris paracyclica
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Onniella depressa
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Eoplectodonta cf. rhombica
(M'Coy 1852)
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= Eoplectodonta (Eoplectodonta) abigailae
Cocks 2010
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Cocks 2010 | |||||||||
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Lingulata
- Lingulida
- Obolidae
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Obolus salopiensis
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unclassified
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Bryozoa indet.
Ehrenberg 1831
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| "Ramose" | ||||||||||
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Stenolaemata
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Stenolaemata indet.
Borg 1926
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| "Button" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | Wales | County: | Rogaland |
| Coordinates: | 52.0° North, 2.0° West (view map) | ||||
| Paleocoordinates: | 50.0° South, 16.5° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Sandbian | 10 m.y. bin: | Ordovician 4 |
| Key time interval: | Actonian | Graptolite zone: | Dicellograptus morrisi |
| Age range of interval: | 454.20000 - 453.20000 m.y. ago |
Stratigraphy
| Formation: | Acton Scott | Member: | Wistanstow | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Listed as Upper Actonian. Sample/bed is highest single bed in Uppermost Wistanstow | |||||
Lithology and environment
| Primary lithology: | bioturbation lithified calcareous siltstone |
| Secondary lithology: | lithified silty mudstone |
| Lithology description: Thoroughly bioturbated yellowish to blue weathering calcareous siltstones and blue-black silty mudstones | |
| Environment: | deep subtidal shelf |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -single event |
| Size of fossils: | macrofossils,mesofossils |
| Encrustation: | occasional |
| Temporal resolution: | snapshot |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 76475 | ||
| Authorizer: | P. Novack-Gottshall, P. Wagner, A. Hendy | Enterer: | P. Hearn, P. Wagner, A. Hendy |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2007-11-21 10:31:50 | Last modified: | 2018-04-11 17:14:34 |
| Access level: | the public | Released: | 2007-11-21 10:31:50 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 25875. | J. M. Hurst. 1979. The stratigraphy and brachiopods of the upper part of the type Caradoc of south Salop. Bulletin of the British Museum. Natural History. Geology Series 32:183-304 [P. Novack-Gottshall/P. Hearn/J. Ju] |
Secondary references:
| 56606 | L. R. Cocks. 2010. Caradoc Strophomenoid and Plectambonitoid Brachiopods from Wales and the Welsh Borderland. Palaeontology 53(5):1155-1200 [B. Kröger/B. Kröger] | |
| 56672 | L. R. M. Cocks and J. -Y. Rong. 1989. Classification and review of the brachiopod superfamily Plectambonitacea. Bulletin of the British Museum (Natural History), Geology 45:77-163 [P. Wagner/P. Wagner/P. Wagner] | |
| 26349 | A. J. W. Hendy. 2008. Personal opinions and reidentification of pre-Cenozoic Mollusca. [A. Hendy/A. Hendy] |