M. laevigata Assoc. of facies 4, Upper Bringewood Beds, Welsh Borderland (Silurian of the United Kingdom)

Where: England, United Kingdom (52.0° N, 3.0° W: paleocoordinates 27.9° S, 13.0° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Upper Bringewood Formation, Gorstian (427.4 - 425.6 Ma)

• Age assignment based on ref. 6658.

• formation-level stratigraphic resolution

Environment/lithology: marine; bioturbated lime mudstone and bioturbated, argillaceous grainstone

• Quiet-water deposit. Active currents rare to absent. Interpreted to be protected, behind bank system of facies 5 and 6. Low organic productivity (little skeletal material).
• Facies 4 consists of bioturbated calcilutites and bioturbated argillaceous calcisiltites, normall with a few, mud-supported skeletal components...most parts of the facies contain only remnants of original lamination. Erosively based lenses of shells and tabular beds of laminated calcisiltite present sporadically.

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23211: authorized by Michael Foote, entered by Michael Foote on 10.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834
solitary trochoid coral
 Auloporida - Syringoporidae
Syringoporidae indet.
Syringoporidae indet. Fromentel 1864 tabulate coral
Cephalopoda
  -
Cephalopoda indet.
Cephalopoda indet. Cuvier 1797
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
 Ostreida - Pterineidae
Actinopteria sowerbyi, Pteronitella retroflexa
 Modiomorphida - Cypricardiniidae
Cypricardinia subplanulata
Craniata
 Craniopsida - Craniopsidae
Craniops implicata
Strophomenata
 Strophomenida - Strophochonetidae
Protochonetes ludloviensis, Shagamella ludloviensis
 Strophomenida - Leptostrophiidae
"Leptostrophia filosa" = Mesoleptostrophia filosa
"Leptostrophia filosa" = Mesoleptostrophia filosa Sowerby 1839
 Strophomenida - Strophonellidae
"Strophonella euglypha" = Strophoprion euglypha
"Strophonella euglypha" = Strophoprion euglypha Dalman 1828
 Strophomenida - Amphistrophiidae
"Amphistrophia funiculata" = Amphistrophiella funiculata
"Amphistrophia funiculata" = Amphistrophiella funiculata M'Coy 1846
 Strophomenida - Rafinesquinidae
"Leptaena depressa" = Leptaena (Leptaena) depressa
"Leptaena depressa" = Leptaena (Leptaena) depressa Sowerby 1824
 Strophomenida - Shaleriidae
"Shaleria ornatella" = Shaleria (Janiomya) ornatella
"Shaleria ornatella" = Shaleria (Janiomya) ornatella Davidson 1871
 Strophomenida - Eopholidostrophiidae
Mesopholidostrophia laevigata
Mesopholidostrophia laevigata de Sowerby and Murchison 1839
Rhynchonellata
 Atrypida - Atrypidae
Atrypa reticularis
Atrypa reticularis Linnaeus 1758
 Orthida - Rhipidomellidae
Dalejina hybrida
Dalejina hybrida Sowerby 1839
 Orthida - Dalmanellidae
Isorthis clivosa
 Athyridida - Athyrididae
Athyrididae indet.
Athyrididae indet. McCoy 1841
smooth athyroid
 Athyridida - Dayiidae
Dayia navicula
Dayia navicula Sowerby 1839
 Athyridida - Rhynchospirinidae
Rhynchospirina sp.
Rhynchospirina sp. Schuchert and LeVene 1929
 Pentamerida - Gypidulidae
Gypidula lata
 Pentamerida - Pentameridae
"Kirkidium knightii" = Kirkidium knighti
"Kirkidium knightii" = Kirkidium knighti Sowerby 1813
 Spiriferida - Delthyrididae
Howellella elegans
Howellella elegans Muir-Wood 1925
 Spiriferida - Cyrtiidae
Eospirifer radiatus
Eospirifer radiatus Sowerby 1834
 Rhynchonellida - Hebetoechiidae
Sphaerirhynchia wilsoni
Sphaerirhynchia wilsoni de Sowerby 1816
 Rhynchonellida - Trigonirhynchiidae
"Camarotoechia nucula" = Microsphaeridiorhynchus nucula
"Camarotoechia nucula" = Microsphaeridiorhynchus nucula Sowerby 1839
genus name in quotes
Lingulata
 Lingulida - Lingulidae
Lingula lewisii
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Stenolaemata
 Cryptostomata - Ptilodictyidae
Ptilodictya gracile
Trilobita
 Proetida - Proetidae
Proetus astringens
Proetus astringens Owens 1973 trilobite
 Phacopida - Dalmanitidae
Dalmanites myops
 Phacopida - Encrinuridae
Encrinurus sp.
Encrinurus sp. Emmrich 1844 trilobite
Encrinurus n. sp.