Overton Quarry #5: Ludfordian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Murchisoniina
- Loxonematidae
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Loxonema obsoletum
(de Sowerby and Murchison 1839)
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1.25 %-specimens | ||||||
| recombined as Loxonema obsoleta | |||||||
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Gastropoda
- Bellerophontida
- Pterothecidae
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Bucanopsis expansus
(de Sowerby and Murchison 1839)
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0.13 %-specimens | ||||||
| recombined as Phragmosphaera expansus | |||||||
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Bivalvia
- Grammysiidae
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Fuchsella amygdalina
(Sowerby 1827)
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3.03 %-specimens | ||||||
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras sp.
Breynius 1832
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0.13 %-specimens | ||||||
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Strophomenata
- Strophomenida
- Strophochonetidae
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Protochonetes ludloviensis
Muir-Wood 1962
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58.82 %-specimens | ||||||
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Rhynchonellata
- Orthida
- Draboviidae
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Salopina lunata
(Sowerby 1839)
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12.52 %-specimens | ||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Microsphaeridiorhynchus nucula
(Sowerby 1839)
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22.03 %-specimens | ||||||
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Stenolaemata
- Cystoporata
- Ceramoporidae
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Ceramopora sp.
Hall 1851
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0.13 %-specimens | ||||||
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Stenolaemata
- Trepostomata
- Heterotrypidae
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Leioclema sp.
Ulrich 1882
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0.13 %-specimens | ||||||
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Polychaeta
- Serpulimorpha
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Serpulites longissimus
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0.47 %-specimens | ||||||
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Ostracoda
- Podocopida
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Calcaribeyrichia tegula
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0.06 %-specimens | ||||||
| see common names | |||||||
Geography
| Country: | United Kingdom | State/province: | England |
| Coordinates: | 52.5° North, 2.6° West (view map) | ||
| Paleocoordinates: | 25.7° South, 12.3° West | ||
| Geographic resolution: | small collection |
Time
| Period: | Silurian | Epoch: | Ludlow |
| Stage: | Ludfordian | 10 m.y. bin: | Silurian 2 |
| *Period: | Late/Upper Silurian | *Epoch: | Late/Upper Ludlovian |
| *International age/stage: | Late/Upper Ludfordian | ||
| Key time interval: | Ludfordian | ||
| Age range of interval: | 425.60000 - 423.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Overton | ||||
| Local section: | Overton Quarry | Local bed: | 6.31 - 9.64 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Lower Whitcliffe Beds, 6.31 - 9.64 m section. | |||||
Lithology and environment
| Primary lithology: | current ripples,wave ripples,bioturbation,shelly/skeletal lithified siltstone |
| Lithology description: interbedded highly bioturbated calcareous siltstones in which most lamination destroyed by bioturbation. alternates with thin 'storm generated' siltstone and shell laminae. minor scour channels and slumping. occassional symmetric and asymmetric ripple laminae. | |
| Environment: | offshore |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:6161 total specimens for ALL 6 collections. | |
Metadata
| Database number: | 8324 | ||
| Authorizer: | J. Alroy | Enterer: | M. Sommers | Research group: | marine invertebrate |
| Created: | 2000-07-06 14:17:43 | Last modified: | 2000-07-06 17:17:43 |
| Access level: | the public | Released: | 2000-11-20 13:53:37 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 570. | D. D. J. Antia. 1981. Faunas from the Upper Silurian (Upper Ludlovian) in the Ludlow-Much Wenlock District, England. Geological Journal 16:137-147 [J. Alroy/M. Sommers/P. Wagner] |