Ludlow-Much Wenlock District #15: Ludfordian, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Lingula lata Portlock 1843
0.5 %-specimens
Microsphaeridiorhynchia nucula
15.3 %-specimens
Rhopalonaria sp.
6.6 %-specimens
Conodonta - Ozarkodinida
Ozarkodina sp. Branson and Mehl 1933
0.3 %-elements
Crinoidea
Crinoidea indet. Miller 1821
0.3 %-specimens
Ostracoda - Podocopida
Calcaribeyrichia torosa
0.3 %-specimens
Ostracoda - Platycopida - Gotlandellidae
Nyhamnella sp.
0.2 %-specimens
Ostracoda
Kuresaaria circulata
2.6 %-specimens
Strophomenata - Strophomenida - Strophochonetidae
Protochonetes ludloviensis Muir-Wood 1962
39.9 %-specimens
Rhynchonellata - Orthida - Draboviidae
Salopina lunata (Sowerby 1839)
1.3 %-specimens
Lingulata - Lingulida - Discinidae
Orbiculoidea rugata
0.5 %-specimens
Lingulata - Lingulida - Trematidae
Schizocrania striata
5.4 %-specimens
Craniata - Craniopsida - Craniopsidae
Craniops implicatus
0.6 %-specimens
Stenolaemata - Cystoporata - Ceramoporidae
Ceramopora sp. Hall 1851
0.5 %-specimens
Stenolaemata - Trepostomata - Heterotrypidae
Leioclema sp. Ulrich 1882
2.3 %-specimens
Tentaculitida - Tentaculitidae
Tentaculites tenuis
7.8 %-specimens
Hyolithida - Hyolithidae
Hyolithes forbesi
0.4 %-specimens
Polychaeta - Serpulimorpha
Serpulites longissimus
2.7 %-specimens
Cephalopoda - Paraphragmitidae
Paraphragmites ibex
1.5 %-specimens
Cephalopoda - Orthocerida - Orthoceratidae
Michelinoceras sp. Foerste 1932
1.2 %-specimens
Leurocycloceras sp. Foerste 1928
0.5 %-specimens
Bivalvia - Solemyida - Solemyidae
Solenomya sp. (Children 1823)
0.9 %-specimens
original and current combination Solemya
Bivalvia - Nuculanida - Cucullellidae
Nuculites ovata
0.5 %-specimens
Bivalvia - Ostreida - Pterineidae
Pterinea tennistriata
0.3 %-specimens
Bivalvia - Grammysiidae
Fuchsella amygdalina (Sowerby 1827)
2.5 %-specimens
Bivalvia - Modiomorphida - Modiomorphidae
Modiolopsis sp. Hall 1847
0.3 %-specimens
Goniophora cymbaeformis (Sowerby 1839)
1.4 %-specimens
recombined as Goniophora (Goniophora) cymbaeformis
Gastropoda - Bellerophontida - Pterothecidae
Bucanopsis expansus (de Sowerby and Murchison 1839)
1.4 %-specimens
recombined as Phragmosphaera expansus
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:outcrop
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
Stratigraphic resolution:group of beds
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:2621 total specimens.
Metadata
Database number:8309
Authorizer:J. Alroy Enterer:M. Sommers
Research group:marine invertebrate
Created:2000-07-05 16:16:12 Last modified:2000-07-05 19:16:12
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]