Proetus concinnus-Warburgella stokesii Assemblage, Much Wenlock Limestone (Silurian of the United Kingdom)

Where: England, United Kingdom (52.5° N, 2.1° W: paleocoordinates 28.4° S, 12.9° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Much Wenlock Limestone Formation, Homerian (430.5 - 427.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; grainstone and lime mudstone

• "Level-bottom carbonate shelf...This is a BA 3 unit....several lithofacies...Trilobites most common in interbedded lst and silty mudst. and nodular lst. lithofacies. The lst. beds and nodules variously consist of carbonate mudstone, grainstone, packstone, and wackestone. Microfacies analysis indicates that the nodular lst. was depos. below storm wave base, although algae indicate photic zone..Deposition of interbedded lst and silty mudst in somewhat shallower water, up to depths approaching normal wave base. In view of wide extent of local Wenlock shelf and consequent attenuation of wave activity, the actual depths would not have been great. A well-oxygenated, mid-shelf location for the assemblage was envisaged by Ratcliffe (1988)."
• "..several lithofacies...Trilobites most common in interbedded lst and silty mudst. and nodular lst. lithofacies. The lst. beds and nodules variously consist of carbonate mudstone, grainstone, packstone, and wackestone. "

Size class: macrofossils

Collection methods: The Assemblage type is broadly distributed, but it seems fairly clear from the text that the elements listed here are known from the Much Wenlock Limestone.

Primary reference: A. T. Thomas and P. D. Lane. 1999. Trilobite assemblages of the North Atlantic Region. in A. J. Boucot and J. D. Lawson, eds. Paleocommunities--a case study from the Silurian and Lower Devonian. Cambridge University Press, Cambrdige 444-457. [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23057: authorized by Michael Foote, entered by Michael Foote on 08.07.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Trilobita
 Corynexochida - Styginidae
Styginidae indet. Vogdes 1890 trilobite
"illaenimorph styginids"
 Phacopida - Phacopidae
Ananaspis sp. Campbell 1967 trilobite
 Phacopida - Acastidae
Acaste sp. Goldfuss 1843 trilobite
 Phacopida - Dalmanitidae
Dalmanites sp. Barrande 1852 trilobite
 Phacopida - Encrinuridae
Encrinurus sp. Emmrich 1844 trilobite
 Phacopida - Calymenidae
Calymene sp. Brongniart 1822 trilobite
 Proetida - Proetidae
Ostracoda
  -
Ostracoda indet. Latreille 1802 ostracod
 Podocopida -
 Palaeocopida -
 Palaeocopida - Beyrichiidae
 Palaeocopida -
Lophophorata
 Tentaculitida - Tentaculitidae
Strophomenata
 Productida - Strophochonetidae
Protochonetes sp. Muir-Wood 1962
 Strophomenida - Amphistrophiidae
Amphistrophia sp. Hall and Clarke 1892
Rhynchonellata
 Spiriferida - Cyrtiidae
Cyrtia sp. Dalman 1828
Striispirifer sp. Cooper and Muir-Wood 1951
Eospirifer sp. Schuchert 1913
 Spiriferida - Delthyrididae
Howellella sp. Kozlowski 1946
 Pentamerida - Gypidulidae
Gypidula sp. Hall 1867
 Pentamerida - Clorindidae
Antirhynchonella sp. Oehlert 1887
 Atrypida -
Atrypida indet. Rzhonsnitskaya 1960
"ribbed atrypoid"
 Atrypida - Atrypidae
Atrypa sp. Dalman 1828
 Atrypida - Glassiidae
Glassia sp. Davidson 1881
genus name in quotes
 Rhynchonellida - Trigonirhynchiidae
 Rhynchonellida - Hebetoechiidae
Sphaerirhynchia sp. Cooper and Muir-Wood 1951
 Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
Resserella sp. Bancroft 1928
Rostroconchia
 Conocardiida - Bransoniidae
"Pleurorhynchus aequicostatus n. sp." = Mulceodens aequicostatus8
"Pleurorhynchus aequicostatus n. sp." = Mulceodens aequicostatus8 Phillips 1848
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
 Ostreida - Pterineidae
 Cardiidia - Grammysiidae
Gastropoda
  -
Gastropoda indet. Cuvier 1797 snail
 Trochonematoidea - Lophospiridae
"Lophospira cyclonema" = Longstaffia cyclonema3
"Lophospira cyclonema" = Longstaffia cyclonema3 Salter 1873 snail
 Euomphalina - Euomphalidae
Euomphalopterus alatus Wahlenberg 1821 snail
Poleumita discors Sowerby 1814 snail
Poleumita walmstedti9 Lindström 1884 snail
Poleumita rugosa9 Sowerby 1814 snail
 Capuloidea - Capulidae
Capulus haliotis n. sp.2 de Sowerby and Murchison 1839 snail
 Bellerophontida - Bellerophontidae
Cymbularia merita n. sp.1, "Bellerophon wenlockensis" = Prosoptychus wenlockensis1, Prosoptychus aff. sphaera9, "Bucaniopsis latevittatus" = Bucanopsis latevittatus1
Cymbularia merita n. sp.1 Cowper Reed 1921 snail
"Bellerophon wenlockensis" = Prosoptychus wenlockensis1 Murchison 1839 snail
Prosoptychus aff. sphaera9 Lindström 1884 snail
ornate species
"Bucaniopsis latevittatus" = Bucanopsis latevittatus1 Lindström 1884 snail
 Bellerophontida - Plectonotidae
"Bellerophon (Bucaniella) trilobatus" = Plectonotoides trilobatus1
"Bellerophon (Bucaniella) trilobatus" = Plectonotoides trilobatus1 Conrad 1839 snail
 Bellerophontida - Bucaniidae
Tremanotus dilatatus1 de Sowerby and Murchison 1839 snail
 Bellerophontida - Pterothecidae
"Bucaniopsis expansus" = Phragmosphaera expansus1
"Bucaniopsis expansus" = Phragmosphaera expansus1 de Sowerby and Murchison 1839 snail
 Bellerophontida - Tropidodiscidae
Temnodiscus fletcheri n. sp.1 Cowper Reed 1921 snail
 Murchisoniina - Phanerotrematidae
"Bembexia lloydii" = Ulrichospira lloydii5
"Bembexia lloydii" = Ulrichospira lloydii5 de Sowerby and Murchison 1839 snail
 Murchisoniina - Murchisoniidae
? Murchisonia dudleyensis n. sp.4 Donald 1902 snail
 Murchisoniina - Hormotomidae
Hormotoma articulata4 Murchison 1839 snail
 Murchisoniina - Loxonematidae
Loxonema planatum7, "Loxonema (Rhabdostropha) pseudofasciatum n. sp." = Loxonema pseudofasciatum6
Loxonema planatum7 Longstaff 1909 snail
"Loxonema (Rhabdostropha) pseudofasciatum n. sp." = Loxonema pseudofasciatum6 Donald 1905 snail
Cephalopoda
 Orthocerida - Dawsonoceratidae
Dawsonoceras sp. Hyatt 1884
Stenolaemata
 Fenestrida - Fenestellidae
Fenestella sp. Lonsdale 1839
 Fenestrata -
 Trepostomida -
  - Phylloporinidae
Pseudohornera sp. Roemer 1876
 Cyclostomata - Entalophoridae
Mitoclema sp. Ulrich 1882
 Cyclostomata - Corynotrypidae
Corynotrypa sp. Bassler 1911
 Cyclostomata -
Sagenella sp. Hall 1851
 Cystoporida - Fistuliporidae
Fistulipora sp. McCoy 1850
 Cryptostomata - Rhinoporidae
Lichenalia sp. Hall 1851
 Cryptostomata - Rhinidictyidae
Pachydictya sp. Ulrich 1882
 Cryptostomata - Arthrostylidae
Glauconomella sp. Bassler 1952
 Trepostomata - Halloporidae
Hallopora sp. Bassler 1911
 Trepostomata - Amplexoporidae
Monotrypa sp. Nicholson 1879
 Trepostomata - Trematoporidae
Trematopora sp. Hall 1852
Eridotrypa sp. Ulrich 1893
 Rhabdomesida - Rhomboporidae
Rhombopora sp. Meek 1872
 Cystoporata - Ceramoporidae
Favositella sp. Etheridge and Foord 1884
Ceramopora sp. Hall 1851
Conodonta
 Panderodontida - Panderodontidae
Panderodus spp. Ethington 1959 conodont
 Ozarkodinida -
Ozarkodina confluens Rhodes 1953 conodont
Ozarkodina sagitta Walliser 1964 conodont
 Ozarkodinida - Spathognathodontodae
"Ozarkodina excavata" = Wurmiella excavata
"Ozarkodina excavata" = Wurmiella excavata Branson and Mehl 1933 conodont
unclassified
  -
Echinodermata indet. Klein 1754
"Pelmatozoan elements"
Stromatoporoidea
 Stromatoporida - Stromatoporidae
 Labechiida - Labechiidae
Labechia conferta Lonsdale 1839
 Actinostromatida - Densastromatidae
Densastroma sp. Flügel 1959
 Actinostromatida - Actinostromatidae
Plectostroma sp. Nestor 1964
 Clathrodictyida - Clathrodictyidae
Clathrodictyon sp. Nicholson and Murie 1878
Clathrodictyon vesiculosum Nicholson and Murie 1878
 Clathrodictyida - Actinodictyidae
Ecclimadictyon sp. Nestor 1964
  -
Anthozoa
 Auloporida - Syringoporidae
Syringopora sp. Goldfuss 1826 tabulate coral
 Favositida - Favositidae
Paleofavosites asper tabulate coral
Paleofavosites rugosus tabulate coral
Paleofavosites sp. Twenhofel 1914 tabulate coral
Favosites multipora tabulate coral
 Favositida - Pachyporidae
Thamnopora sp. Steininger 1831 tabulate coral
Cladopora sp. Hall 1851 tabulate coral
 Favositida - Theciidae
Thecia expatiata tabulate coral
"Angopora sp." = Thecia (Angopora) Jones 1936 tabulate coral
 Favositida - Alveolitidae
Subalveolites sp. Sokolov 1955 tabulate coral
 Favositida - Coenitidae
Planocoenites sp. Sokolov 1952 tabulate coral
Coenites sp. Eichwald 1829 tabulate coral
 Heliolitida - Halysitidae
Cystihalysites sp. Chernyshev 1941 tabulate coral
Halysites sp. von Waldheim 1813 tabulate coral
Halysites catenularius Linnaeus 1767 tabulate coral
 Heliolitida - Plasmoporidae
Plasmopora sp. Milne-Edwards and Haime 1849 tabulate coral
 Heliolitida - Proporidae
Propora tubulata tabulate coral
 Heliolitida - Stelliporellidae
 Heliolitida - Heliolitidae
Heliolites megastoma tabulate coral
Heliolites sp. Dana 1846 tabulate coral
 Cystiphyllida - Tryplasmatidae
Wenlockia sp. Kato 1966 horn coral
Tryplasma sp. Lonsdale 1845 horn coral
 Cystiphyllida - Fletcheriidae
Fletcheria sp. Milne-Edwards and Haime 1851 horn coral
 Cystiphyllida - Cystiphyllidae
Microplasma sp. Dybowski 1873 horn coral
 Cystiphyllida - Goniophyllidae
Goniophyllum sp. Milne-Edwards and Haime 1850 horn coral
 Cystiphyllida - Palaeocyclidae
Rhabdocyclus sp. Lang and Smith 1939 horn coral
 Stauriida - Laccophyllidae
Syringaxon sp. Lindström 1882 horn coral
 Stauriida - Ptenophyllidae
Cymatelasma sp. Hill and Butler 1936 horn coral
Spongophylloides sp. Meyer 1881 horn coral
 Stauriida - Kodonophyllidae
Kodonophyllum sp. Wedekind 1927 horn coral
 Stauriida - Calostylidae
Calostylis sp. Lindström 1868 horn coral
Helminthidium sp. Lindström 1882 horn coral
 Stauriida - Acervulariidae
Acervularia sp. Schweigger 1819 horn coral
 Stauriida - Lykophyllidae
Pycnactis sp. Ryder 1926 horn coral
Phaulactis sp. Ryder 1926 horn coral
Plasmophyllum sp. Dybowski 1873 horn coral
 Stauriida - Arachnophyllidae
Arachnophyllum murchisoni Edwards and Haime 1851 horn coral
 Stauriida - Entelophyllidae
Dasycladophyceae
 Dasycladales - Diploporaceae