Sowerbyella Assem Phase 1 Samp F51, Flags and Grits, Ffairfach Group: Late/Upper Llanvirn, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Crinoidea
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Crinoidea indet.
Miller 1821
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Inarticulata
- Inarticulata
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Inarticulata indet.
Huxley 1869
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2 individuals | |||||||||
| invalid subgroup of Brachiopoda | ||||||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella antiqua
Jones 1928
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166 individuals | |||||||||
| recombined as Sowerbyella (Sowerbyella) antiqua | ||||||||||
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Rhynchonellata
- Orthida
- Harknessellidae
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Horderleyella sp.
Bancroft 1928
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4 individuals | |||||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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Dalmanella parva
Williams 1949
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19 individuals | |||||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Rostricellula triangularis
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1 individual | |||||||||
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Stenolaemata
- Trepostomata
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Trepostomata indet.
Ulrich 1882
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2 individuals | |||||||||
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Trilobita
- Asaphida
- Asaphidae
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Basilicus tyrannus
(Murchison 1839)
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2 individuals | |||||||||
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Trilobita
- Trinucleida
- Trinucleidae
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Marrolithus sp.
Bancroft 1929
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6 individuals | |||||||||
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Trilobita
- Phacopida
- Calymenidae
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Flexicalymene cambriensis
(Salter 1865)
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6 individuals | |||||||||
| recombined as Flexicalymene cambrensis | ||||||||||
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Ostracoda
- Hollinocopida
- Tetradellidae
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Tallinnella sp.
Opik 1937
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2 individuals | |||||||||
| [entered as Talinella sp.] | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | Wales |
| Coordinates: | 52.0° North, 4.0° West (view map) | ||
| Paleocoordinates: | 58.0° South, 19.7° West | ||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Middle Ordovician |
| Stage: | Darriwilian | 10 m.y. bin: | Ordovician 3 |
| Key time interval: | Late/Upper Llanvirn | Graptolite zone: | Didymograptus murchisoni |
| Age range of interval: | 461.30000 - 458.40000 m.y. ago |
Stratigraphy
| Geological group: | Ffairfach | Formation: | Ffairfach Flags and Grits | ||
| Local section: | Ffairfach | Local bed: | F51 | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Ffairfach Section Sample F51
JA: originally entered as Lower Llandeilo and resolved to the formation level, but Upper Llanvirn according to the authors and certainly resolved to the bed level | |||||
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Secondary lithology: | lithified calcareous siltstone |
| Environment: | transition zone/lower shoreface |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | bulk,sieve |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:Brachiopod faunal associations | |
Metadata
| Database number: | 69583 | ||
| Authorizer: | A. Miller | Enterer: | A. Miller |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2007-02-27 17:00:46 | Last modified: | 2018-05-14 21:43:37 |
| Access level: | the public | Released: | 2007-02-27 17:00:46 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 162. | A. Williams, M. G. Lockley, and J. M. Hurst. 1981. Benthic palaeocommunities represented in the Ffairfach Group and coeval Ordovician successions of Wales. Palaeontology 24(4):661-694 [A. Miller/P. Novack-Gottshall/J. Alroy] |