Overton Quarry #1: Ludfordian, United Kingdom

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