Overton Quarry #2: Ludfordian, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Aegeria grayi
0.54 %-specimens
Microsphaeridiorhynchia nucula
9.52 %-specimens
Stenolaemata - Cystoporata - Ceramoporidae
Ceramopora sp. Hall 1851
7.57 %-specimens
Stenolaemata - Trepostomata - Heterotrypidae
Leioclema sp. Ulrich 1882
0.10 %-specimens
Rhynchonellata - Athyridida - Dayiidae
Dayia navicula (Sowerby 1839)
2.05 %-specimens
Rhynchonellata - Orthida - Draboviidae
Salopina lunata (Sowerby 1839)
13.22 %-specimens
Strophomenata - Strophomenida - Strophochonetidae
Protochonetes ludloviensis Muir-Wood 1962
33.42 %-specimens
Lingulata - Lingulida - Discinidae
Orbiculoidea rugata
1.22 %-specimens
Polychaeta - Eunicemorpha
Arabellites sp.
0.54 %-specimens
Polychaeta - Serpulimorpha
Serpulites longissimus
4.41 %-specimens
Bivalvia - Ostreida - Pterineidae
Pterinea tenuistriata
3.08 %-specimens
Pteronitella retroflexa
1.80 %-specimens
Bivalvia - Modiomorphida - Modiomorphidae
Goniophora cymbaeformis (Sowerby 1839)
4.11 %-specimens
recombined as Goniophora (Goniophora) cymbaeformis
Bivalvia - Grammysiidae
Fuchsella amygdalina (Sowerby 1827)
5.12 %-specimens
Bivalvia - Nuculanida - Cucullellidae
Nuculites antiquaas
1.10 %-specimens
Cephalopoda - Orthocerida - Orthoceratidae
Orthoceras sp. Breynius 1832
4.45 %-specimens
Gastropoda - Bellerophontida - Pterothecidae
Bucanopsis expansus (de Sowerby and Murchison 1839)
1.82 %-specimens
recombined as Phragmosphaera expansus
Gastropoda - Murchisoniina - Loxonematidae
Loxonema obsoletum (de Sowerby and Murchison 1839)
4.70 %-specimens
recombined as Loxonema obsoleta
Gastropoda - Naticopsidae
Naticopsis cf. trevorpatriciorum Peel 1975
2.22 %-specimens
corrected as Naticopsis trevorpaticiciorum
Ostracoda - Palaeocopida
Hebellum cf. tetragonum
1.38 %-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:0 - 1.28 m
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Lower Whitcliffe Beds, 0 - 1.28 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:8321
Authorizer:J. Alroy Enterer:M. Sommers
Research group:marine invertebrate
Created:2000-07-06 11:48:01 Last modified:2000-07-06 14:48:01
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]