M. laevigata Assoc. of facies 5 and 6, Upper Bringewood Beds, Welsh Borderland: Gorstian, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa
Anthozoa indet. Ehrenberg 1834
solitary trochoid coral
Cephalopoda
Cephalopoda indet. Cuvier 1797
Gastropoda
Gastropoda indet. Cuvier 1795
Bivalvia - Ostreida - Pterineidae
Pteronitella retroflexa
Actinopteria sowerbyi
Strophomenata - Strophomenida - Strophochonetidae
Shagamella ludloviensis
Protochonetes ludloviensis Muir-Wood 1962
Strophomenata - Strophomenida - Eopholidostrophiidae
Mesopholidostrophia laevigata (de Sowerby and Murchison 1839)
Strophomenata - Strophomenida - Amphistrophiidae
Amphistrophia funiculata (M'Coy 1846)
recombined as Amphistrophiella funiculata
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena depressa (Sowerby 1824)
recombined as Leptaena (Leptaena) depressa
Strophomenata - Strophomenida - Strophonellidae
Strophonella euglypha (Dalman 1828)
recombined as Strophoprion euglypha
Strophomenata - Strophomenida - Leptostrophiidae
Leptostrophia filosa (Sowerby 1839)
recombined as Mesoleptostrophia filosa
Strophomenata - Strophomenida - Shaleriidae
Shaleria ornatella (Davidson 1871)
recombined as Shaleria (Janiomya) ornatella
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Camarotoechia nucula (Sowerby 1839)
recombined as Microsphaeridiorhynchus nucula
genus name in quotes
Rhynchonellata - Rhynchonellida - Hebetoechiidae
Sphaerirhynchia wilsoni (de Sowerby 1816)
Rhynchonellata - Orthida - Rhipidomellidae
Dalejina hybrida (Sowerby 1839)
Rhynchonellata - Orthida - Dalmanellidae
Isorthis clivosa
Rhynchonellata - Atrypida - Atrypidae
Atrypa reticularis (Linnaeus 1758)
original and current combination Anomia reticularis
Rhynchonellata - Pentamerida - Gypidulidae
Gypidula lata
Rhynchonellata - Pentamerida - Pentameridae
Kirkidium knightii (Sowerby 1813)
recombined as Kirkidium knighti
Rhynchonellata - Spiriferida - Cyrtiidae
Eospirifer radiatus (Sowerby 1834)
Rhynchonellata - Spiriferida - Delthyrididae
Howellella elegans Muir-Wood 1925
Rhynchonellata - Athyridida - Dayiidae
Dayia navicula (Sowerby 1839)
Craniata - Craniopsida - Craniopsidae
Craniops implicata
Lingulata - Lingulida - Lingulidae
Lingula lewisii
unclassified
Bryozoa indet. Ehrenberg 1831
Stenolaemata - Cryptostomata - Ptilodictyidae
Ptilodictya gracile
Trilobita - Phacopida - Dalmanitidae
Dalmanites myops
see common names

Geography
Country:United Kingdom State/province:England
Coordinates: 52.0° North, 3.0° West (view map)
Paleocoordinates:27.9° South, 13.0° West
Basis of coordinate:based on political unit
Geographic resolution:basin
Time
Period:Silurian Epoch:Ludlow
Stage:Gorstian 10 m.y. bin:Silurian 2
*International age/stage:Late/Upper Gorstian
Key time interval:Gorstian
Age range of interval:427.40000 - 425.60000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Upper Bringewood
Stratigraphic resolution:formation
Stratigraphy comments: Age assignment based on ref. 6658.
Lithology and environment
Primary lithology:"cross stratification",shelly/skeletal grainstone
Secondary lithology: "shale"
Includes fossils?Y
Lithology description: Facies 5: biocalcarenite with calcilutite matrix and shows gradations from mud-supported to grain-supported texture. Pellets, crinoid ossicles, brachiopod fragments, sponge spicules. Thin tabular beds throughout. Shale layers 1 cm thick or less between limestone beds. Facies 6: Crinoideal biosparrudite and coarse-grained biocalcarenite. Thin shale layers, but carbonates contain little clay. Biosparrudites grain-supported. Cross lamination of both planar and trough form.
Environment:marine indet.
Geology comments: Present in facies 5 and 6. Interpreted as shallow shelf with high energy. F6 includes shoal lime sand. Carbonate interruption of shoaling upwards sequence of terrigenous sediments. Bank system.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Metadata
Database number:23213
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Uhen Research group:marine invertebrate
Created:2002-07-10 14:41:07 Last modified:2018-11-26 18:19:01
Access level:the public Released:2002-07-10 14:41:07
Creative Commons license:CC BY
Reference information

Primary reference:

6670. R. Watkins and C. J. Aithie. 1980. Carbonate shelf environments and faunal communities in the Upper Bringewood Beds of the British Silurian. Palaeogeography, Palaeoclimatology, Palaeoecology 29:341-368 [M. Foote/M. Foote/M. Foote]