Overton Quarry #1: Ludfordian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Aegeria grayi
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2.21 %-specimens | |||||||||
Microsphaeridiorhynchia nucula
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24.03 %-specimens | |||||||||
Kurosaaria circulata
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2.09 %-specimens | |||||||||
Trilobita
- Phacopida
- Encrinuridae
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Encrinurus sp.
Emmrich 1844
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0.83 %-specimens | |||||||||
[entered as Encrinuris sp.] | ||||||||||
Trilobita
- Phacopida
- Calymenidae
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Calymene sp.
Brongniart 1822
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0.14 %-specimens | |||||||||
Ostracoda
- Palaeocopida
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Scaldianella cf. simplex
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3.08 %-specimens | |||||||||
Ostracoda
- Palaeocopida
- Beyrichiidae
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Neobeyrichia lauensis
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0.97 %-specimens | |||||||||
synonym of Beyrichia | ||||||||||
Ostracoda
- Palaeocopida
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Hebellum cf. tetragonum
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1.84 %-specimens | |||||||||
Ostracoda
- Platycopida
- Cavellinidae
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Cavellina sp.
Coryell 1928
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0.10 %-specimens | |||||||||
Ostracoda
- Podocopida
- Bairdiocyprididae
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Cytherellina siliqua
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1.02 %-specimens | |||||||||
Polychaeta
- Eunicemorpha
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Arabellites sp.
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0.07 %-specimens | |||||||||
Polychaeta
- Serpulimorpha
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Serpulites longissimus
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1.20 %-specimens | |||||||||
Lingulata
- Lingulida
- Discinidae
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Orbiculoidea rugata
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0.10 %-specimens | |||||||||
Lingulata
- Lingulida
- Lingulidae
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Lingula lewisi
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1.66 %-specimens | |||||||||
Craniata
- Craniopsida
- Craniopsidae
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Craniops implicatus
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0.23 %-specimens | |||||||||
Strophomenata
- Strophomenida
- Shaleriidae
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Shaleria ornatella
(Davidson 1871)
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0.93 %-specimens | |||||||||
recombined as Shaleria (Janiomya) ornatella | ||||||||||
Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena depressa
(Sowerby 1824)
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0.42 %-specimens | |||||||||
recombined as Leptaena (Leptaena) depressa | ||||||||||
Strophomenata
- Strophomenida
- Strophochonetidae
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Protochonetes ludloviensis
Muir-Wood 1962
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9.79 %-specimens | |||||||||
Shagamella ludloviensis
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0.22 %-specimens | |||||||||
Rhynchonellata
- Spiriferida
- Delthyrididae
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Howellella elegans
Muir-Wood 1925
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0.51 %-specimens | |||||||||
Rhynchonellata
- Athyridida
- Dayiidae
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Dayia navicula
(Sowerby 1839)
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1.78 %-specimens | |||||||||
Rhynchonellata
- Rhynchonellida
- Hebetoechiidae
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Sphaerirhynchia wilsoni
(de Sowerby 1816)
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0.11 %-specimens | |||||||||
Rhynchonellata
- Orthida
- Draboviidae
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Salopina lunata
(Sowerby 1839)
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39.56 %-specimens | |||||||||
Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa reticularis
(Linnaeus 1758)
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1.15 %-specimens | |||||||||
original and current combination Anomia reticularis | ||||||||||
Stenolaemata
- Cystoporata
- Ceramoporidae
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Ceramopora sp.
Hall 1851
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1.43 %-specimens | |||||||||
Stenolaemata
- Trepostomata
- Heterotrypidae
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Leioclema sp.
Ulrich 1882
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4.38 %-specimens | |||||||||
Hyolithida
- Hyolithidae
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Hyolithes forbesi
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0.07 %-specimens | |||||||||
Tentaculita
- Cornulitida
- Cornulitidae
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Cornulites sp.
Schlotheim 1820
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0.28 %-specimens | |||||||||
Bivalvia
- Ostreida
- Pterineidae
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Pteronitella retroflexa
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0.03 %-specimens | |||||||||
Bivalvia
- Grammysiidae
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Fuchsella amygdalina
(Sowerby 1827)
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1.92 %-specimens | |||||||||
Cephalopoda
- Paraphragmitidae
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Paraphragmites ibex
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0.03 %-specimens | |||||||||
Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras sp.
Breynius 1832
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0.28 %-specimens | |||||||||
Conodonta
- Ozarkodinida
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Ozarkodina sp.
Branson and Mehl 1933
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0.10 %-elements | |||||||||
Chondrichthyes
- Ischnacanthiformes
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Ischnacanthus kingi
White 1961
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0.03 %-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: | -2.04 - 0 m | ||
Local order: | bottom to top | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Upper Leintwardine Beds, basal 2.04 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: | 8320 | ||
Authorizer: | J. Alroy | Enterer: | M. Sommers | Research group: | marine invertebrate |
Created: | 2000-07-06 11:06:06 | Last modified: | 2000-07-06 14:06:06 |
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] |