Dalmanites caudatus-Raphiophorus parvulus Assemblage, Coalbrookdale Fm.: Sheinwoodian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Trinucleida
- Raphiophoridae
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Raphiophorus parvulus
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Trilobita
- Proetida
- Tropidocoryphidae
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Decoroproetus spp.
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Trilobita
- Phacopida
- Dalmanitidae
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Dalmanites longicaudatus
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unclassified
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Brachiopoda indet.
Cuvier 1805
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Rhynchonellata
- Atrypida
- Glassiidae
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Glassia sp.
Davidson 1881
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unclassified
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Hyolitha indet.
Marek 1963
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Cephalopoda
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Cephalopoda indet.
Cuvier 1797
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| orthocones | ||||||||||
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Bivalvia
- Cyrtodontida
- Cardiolidae
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Cardiola sp.
Broderip 1839
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Bivalvia
- Cyrtodontida
- Slavidae
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Slava sp.
Barrande 1881
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Pterobranchia
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Graptolithina indet.
Bronn 1849
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| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | England |
| Coordinates: | 52.0° North, 2.0° West (view map) | ||
| Paleocoordinates: | 30.5° South, 13.4° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | local area |
Time
| Period: | Silurian | Epoch: | Wenlock |
| Stage: | Sheinwoodian | 10 m.y. bin: | Silurian 2 |
| Key time interval: | Sheinwoodian | ||
| Age range of interval: | 433.40000 - 430.50000 m.y. ago |
Stratigraphy
| Formation: | Coalbrookdale |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | silty mudstone |
| Lithology description: "...well-bedded silty mudstones..." | |
| Environment: | marine indet. |
| Geology comments: "BA 4-5. Associated lithofacies is well-bedded silty mudstones of the shale belt offshore from the shelf limestones. Mikulic and Watkins (1981) referred the lithotype to their mudstone facies and laminated shale facies. The latter facies was considered to be non-bioturbated possibly because of a low oxygenation of the bottom waters." "In the Wenlock type area the Coalbrookdale Formation marks the start of a regressive event which culminated in the deposition of the Much Wenlock Limestone...The lower parts of that formation were deposited between wave base and ust below storm wave base, and the vertical sequence implies a deeper depositional environment for the Coalbrookdale...bottom currents existed...general absence of suspension feeders..." | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | microfossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Assemblage is discussed in general terms; I have attempted, based on text and cross-refernce to refs. 6646 and 6647, to isolate the elements that occur in the Coalbrookdale. | |
| Taxonomic list comments:Many elements not given to the genus level. | |
Metadata
| Database number: | 23091 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Uhen | Research group: | marine invertebrate |
| Created: | 2002-07-09 09:30:35 | Last modified: | 2018-11-26 18:03:33 |
| Access level: | authorizer only | Released: | 2004-07-09 09:30:35 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6632. | A. T. Thomas and P. D. Lane. 1999. Trilobite assemblages of the North Atlantic Region. in A. J. Boucot and J. D. Lawson, eds. Paleocommunities--a case study from the Silurian and Lower Devonian. Cambridge University Press, Cambrdige 444-457. [M. Foote/M. Foote/M. Foote] |