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

Show authors, comments, and common names
unclassified
  -
Echinodermata indet., Semicoscinum sp., Aulacopora sp., Dokophyllym turbinatus, Lophostroma sp.
Echinodermata indet. Klein 1754
"Pelmatozoan elements"
Conodonta
 Panderodontida - Panderodontidae
Panderodus spp.
Panderodus spp. Ethington 1959 conodont
 Ozarkodinida - Spathognathodontodae
"Ozarkodina excavata" = Wurmiella excavata
"Ozarkodina excavata" = Wurmiella excavata Branson and Mehl 1933 conodont
 Ozarkodinida -
Ozarkodina sagitta, Ozarkodina confluens
Ozarkodina sagitta Walliser 1964 conodont
Ozarkodina confluens Rhodes 1953 conodont
Strophomenata
 Strophomenida - Strophochonetidae
Protochonetes sp.
Protochonetes sp. Muir-Wood 1962
 Strophomenida - Amphistrophiidae
Amphistrophia sp.
Amphistrophia sp. Hall and Clarke 1892
Rhynchonellata
 Pentamerida - Gypidulidae
Gypidula sp.
Gypidula sp. Hall 1867
 Pentamerida - Clorindidae
Antirhynchonella sp.
Antirhynchonella sp. Oehlert 1887
 Spiriferida - Delthyrididae
Howellella sp.
Howellella sp. Kozlowski 1946
 Spiriferida - Cyrtiidae
Cyrtia sp., Striispirifer sp., Eospirifer sp.
Cyrtia sp. Dalman 1828
Striispirifer sp. Cooper and Muir-Wood 1951
Eospirifer sp. Schuchert 1913
 Atrypida -
Atrypida indet.
Atrypida indet. Rzhonsnitskaya 1960
"ribbed atrypoid"
 Atrypida - Glassiidae
Glassia sp.
Glassia sp. Davidson 1881
genus name in quotes
 Atrypida - Atrypidae
Atrypa sp.
Atrypa sp. Dalman 1828
 Rhynchonellida - Trigonirhynchiidae
Microsphaeridiorhynchus sp., Rhynchotreta sp.
Rhynchotreta sp. Hall 1879
 Rhynchonellida - Hebetoechiidae
Sphaerirhynchia sp.
Sphaerirhynchia sp. Cooper and Muir-Wood 1951
 Orthida - Dalmanellidae
Resserella sp., Isorthis sp.
Resserella sp. Bancroft 1928
Isorthis sp. Kozlowski 1929
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites ornatus
Stenolaemata
 Cystoporata - Fistuliporidae
Fistulipora sp.
Fistulipora sp. McCoy 1850
 Cystoporata - Ceramoporidae
Ceramopora sp., Favositella sp.
Ceramopora sp. Hall 1851
Favositella sp. Etheridge and Foord 1884
  - Phylloporinidae
Pseudohornera sp.
Pseudohornera sp. Roemer 1876
 Trepostomida - Amplexoporidae
? Amplexopora sp., Monotrypella sp., Monotrypa sp.
Monotrypa sp. Nicholson 1879
 Trepostomida -
Nicholsonella sp.
Nicholsonella sp. Ulrich 1890
 Cyclostomata - Diastoporidae
Sagenella sp.
Sagenella sp. Hall 1851
 Cyclostomata - Corynotrypidae
Corynotrypa sp.
Corynotrypa sp. Bassler 1911
 Cyclostomata - Crownoporidae
Mitoclema sp.
Mitoclema sp. Ulrich 1882
 Rhabdomesida - Rhomboporidae
Rhombopora sp.
Rhombopora sp. Meek 1872
 Cryptostomata - Arthrostylidae
Glauconomella sp.
Glauconomella sp. Bassler 1952
 Cryptostomata - Rhinidictyidae
Pachydictya sp.
Pachydictya sp. Ulrich 1882
 Cryptostomata - Rhinoporidae
Lichenalia sp.
Lichenalia sp. Hall 1851
 Cryptostomata - Fenestellidae
Archaeofenestella sp., Fenestella sp., Reteporina sp.
Fenestella sp. Lonsdale 1839
Reteporina sp. d'Orbigny 1849
 Trepostomata - Heterotrypidae
Asperopora sp.
 Trepostomata - Batostomellidae
Batostomella sp.
Batostomella sp. Bassler 1911
 Trepostomata - Halloporidae
Hallopora sp.
Hallopora sp. Bassler 1911
 Trepostomata - Trematoporidae
Trematopora sp.
Trematopora sp. Hall 1852
 Trepostomata - Aisenvergiidae
Eridotrypa sp.
Eridotrypa sp. Ulrich 1893
Cephalopoda
 Orthocerida - Dawsonoceratidae
Dawsonoceras sp.
Dawsonoceras sp. Hyatt 1884
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
 Bellerophontida - Pterothecidae
"Bucaniopsis expansus" = Phragmosphaera expansus7
"Bucaniopsis expansus" = Phragmosphaera expansus7 de Sowerby and Murchison 1839 snail
 Bellerophontida - Bucaniidae
Tremanotus dilatatus7
Tremanotus dilatatus7 de Sowerby and Murchison 1839 snail
 Bellerophontida - Bellerophontidae
"Bucaniopsis latevittatus" = Bucanopsis latevittatus7, Cymbularia merita n. sp.7, "Bellerophon wenlockensis" = Prosoptychus wenlockensis7, Prosoptychus aff. sphaera8
"Bucaniopsis latevittatus" = Bucanopsis latevittatus7 Lindström 1884 snail
Cymbularia merita n. sp.7 Reed 1921 snail
"Bellerophon wenlockensis" = Prosoptychus wenlockensis7 Murchison 1839 snail
Prosoptychus aff. sphaera8 Lindström 1884 snail
ornate species
 Bellerophontida - Plectonotidae
"Bellerophon (Bucaniella) trilobatus" = Plectonotoides trilobatus7
"Bellerophon (Bucaniella) trilobatus" = Plectonotoides trilobatus7 Conrad 1839 snail
 Bellerophontida - Tropidodiscidae
Temnodiscus fletcheri n. sp.7
Temnodiscus fletcheri n. sp.7 Reed 1921 snail
 Murchisoniina - Hormotomidae
Hormotoma articulata2
Hormotoma articulata2 Murchison 1839 snail
 Murchisoniina - Murchisoniidae
? Murchisonia dudleyensis n. sp.2
? Murchisonia dudleyensis n. sp.2 Donald 1902 snail
 Murchisoniina - Lophospiridae
"Lophospira cyclonema" = Longstaffia cyclonema1
"Lophospira cyclonema" = Longstaffia cyclonema1 Salter 1873 snail
 Murchisoniina - Loxonematidae
"Loxonema (Rhabdostropha) pseudofasciatum n. sp." = Loxonema pseudofasciatum4, Loxonema planatum5
"Loxonema (Rhabdostropha) pseudofasciatum n. sp." = Loxonema pseudofasciatum4 Donald 1905 snail
Loxonema planatum5 Longstaff 1909 snail
 Murchisoniina - Phanerotrematidae
"Bembexia lloydii" = Ulrichospira lloydii3
"Bembexia lloydii" = Ulrichospira lloydii3 de Sowerby and Murchison 1839 snail
 Euomphalina - Platyceratidae
Platyceras haliotis n. sp.8
Platyceras haliotis n. sp.8 de Sowerby and Murchison 1839 snail
 Euomphalina - Euomphalidae
Euomphalopterus alatus, Poleumita walmstedti8, Poleumita rugosa8, Poleumita discors
Euomphalopterus alatus Wahlenberg 1821 snail
Poleumita walmstedti8 Lindström 1884 snail
Poleumita rugosa8 Sowerby 1814 snail
Poleumita discors Sowerby 1814 snail
Rostroconchia
 Conocardiida - Bransoniidae
"Pleurorhynchus aequicostatus n. sp." = Mulceodens aequicostatus6
"Pleurorhynchus aequicostatus n. sp." = Mulceodens aequicostatus6 Phillips 1848
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
 Ostreida - Pterineidae
Pteronitella retroflexa
 Cardiidia - Grammysiidae
Grammysia cingulata
Deuteropoda
  -
Ostracoda indet.
Ostracoda indet. Latreille 1802 ostracod
Ostracoda
 Podocopida -
Sleia grumulata, Sleia troglodytophila
 Palaeocopida - Beyrichiidae
Beyrichia clausa
 Palaeocopida -
Zorotoxotis medioculta, Strepula concentrica, Amphitoxotis sp., Gongylostonyx sp., Sarmatotoxotis sp., Charitoxotis gravida, Osmotoxotis phalacra, Tribotoxotis dorsistriata, Aetholicotoxotis nidicola, Tinotoxotis velivola
Trilobita
 Corynexochida - Styginidae
Styginidae indet.
Styginidae indet. Vogdes 1890 trilobite
"illaenimorph styginids"
 Proetida - Proetidae
Proetus concinnus, Warburgella stokesii
Proetus concinnus Dalman 1827 trilobite
Warburgella stokesii Murchison 1839 trilobite
 Phacopida - Calymenidae
Calymene sp.
Calymene sp. Brongniart 1822 trilobite
 Phacopida - Phacopidae
Ananaspis sp.
Ananaspis sp. Campbell 1967 trilobite
 Phacopida - Dalmanitidae
Dalmanites sp.
Dalmanites sp. Barrande 1852 trilobite
 Phacopida - Acastidae
Acaste sp.
Acaste sp. Goldfuss 1843 trilobite
 Phacopida - Encrinuridae
Encrinurus sp.
Encrinurus sp. Emmrich 1844 trilobite
Anthozoa
 Cystiphyllida - Palaeocyclidae
Rhabdocyclus sp.
Rhabdocyclus sp. Lang and Smith 1939 horn coral
 Cystiphyllida - Cystiphyllidae
Microplasma sp., Cystiphyllum siluriense
Microplasma sp. Dybowski 1873 horn coral
 Cystiphyllida - Fletcheriidae
Fletcheria sp.
Fletcheria sp. Milne-Edwards and Haime 1851 horn coral
 Cystiphyllida - Tryplasmatidae
Tryplasma sp., Wenlockia sp.
Tryplasma sp. Lonsdale 1845 horn coral
Wenlockia sp. Kato 1966 horn coral
 Cystiphyllida - Goniophyllidae
Goniophyllum sp.
Goniophyllum sp. Milne-Edwards and Haime 1850 horn coral
 Stauriida - Calostylidae
Helminthidium sp., Calostylis sp.
Helminthidium sp. Lindström 1882 horn coral
Calostylis sp. Lindström 1868 horn coral
 Stauriida - Kodonophyllidae
Kodonophyllum sp.
Kodonophyllum sp. Wedekind 1927 horn coral
 Stauriida - Acervulariidae
Acervularia sp.
Acervularia sp. Schweigger 1819 horn coral
 Stauriida - Laccophyllidae
Syringaxon sp.
Syringaxon sp. Lindström 1882 horn coral
 Stauriida - Ptenophyllidae
Cymatelasma sp., Spongophylloides sp.
Cymatelasma sp. Hill and Butler 1936 horn coral
Spongophylloides sp. Meyer 1881 horn coral
 Stauriida - Entelophyllidae
Entelophyllum articulatus
 Stauriida - Arachnophyllidae
Arachnophyllum murchisoni
Arachnophyllum murchisoni Edwards and Haime 1851 horn coral
 Stauriida - Lykophyllidae
Plasmophyllum sp., Pycnactis sp., Phaulactis sp.
Plasmophyllum sp. Dybowski 1873 horn coral
Pycnactis sp. Ryder 1926 horn coral
Phaulactis sp. Ryder 1926 horn coral
 Favositida - Favositidae
Paleofavosites asper, Paleofavosites rugosus, Paleofavosites sp., Favosites multipora
Paleofavosites asper tabulate coral
Paleofavosites rugosus tabulate coral
Paleofavosites sp. Twenhofel 1914 tabulate coral
Favosites multipora tabulate coral
 Favositida - Pachyporidae
Cladopora sp., Thamnopora sp.
Cladopora sp. Hall 1851 tabulate coral
Thamnopora sp. Steininger 1831 tabulate coral
 Favositida - Theciidae
Thecia expatiata, "Angopora sp." = Thecia (Angopora)
Thecia expatiata tabulate coral
"Angopora sp." = Thecia (Angopora) Jones 1936 tabulate coral
 Favositida - Alveolitidae
Subalveolites sp.
Subalveolites sp. Sokolov 1955 tabulate coral
 Favositida - Coenitidae
Coenites sp., Planocoenites sp.
Coenites sp. Eichwald 1829 tabulate coral
Planocoenites sp. Sokolov 1952 tabulate coral
 Auloporida - Syringoporidae
Syringopora sp.
Syringopora sp. Goldfuss 1826 tabulate coral
 Heliolitida - Stelliporellidae
Stelliporella parvistella
 Heliolitida - Heliolitidae
Heliolites interstinctus, Heliolites megastoma, Heliolites sp.
Heliolites megastoma tabulate coral
Heliolites sp. Dana 1846 tabulate coral
 Heliolitida - Plasmoporidae
Plasmopora sp.
Plasmopora sp. Milne-Edwards and Haime 1849 tabulate coral
 Heliolitida - Proporidae
Propora tubulata
Propora tubulata tabulate coral
 Heliolitida - Halysitidae
Cystihalysites sp., Halysites sp., Halysites catenularius
Cystihalysites sp. Chernyshev 1941 tabulate coral
Halysites sp. von Waldheim 1813 tabulate coral
Halysites catenularius Linnaeus 1767 tabulate coral
Stromatoporoidea
 Stromatoporida - Stromatoporidae
Stromatopora antiqua, Stromatopora carteri, Stromatopora sp.
Stromatopora antiqua stromatoporoid sponge
Stromatopora carteri stromatoporoid sponge
Stromatopora sp. Goldfuss 1826 stromatoporoid sponge
 Clathrodictyida - Clathrodictyidae
Clathrodictyon striatellum, Clathrodictyon sp., Clathrodictyon vesiculosum
Clathrodictyon striatellum stromatoporoid sponge
Clathrodictyon sp. Nicholson and Murie 1878 stromatoporoid sponge
Clathrodictyon vesiculosum Nicholson and Murie 1878 stromatoporoid sponge
 Clathrodictyida - Actinodictyidae
Ecclimadictyon sp.
Ecclimadictyon sp. Nestor 1964 stromatoporoid sponge
 Stromatoporellida - Stromatoporellidae
"Diplostroma sp." = Simplexodictyon
"Diplostroma sp." = Simplexodictyon Bogoyavlenskaya 1965 stromatoporoid sponge
 Labechiida - Labechiidae
Labechia conferta
Labechia conferta Lonsdale 1839 stromatoporoid sponge
 Actinostromatida - Actinostromatidae
Plectostroma sp.
Plectostroma sp. Nestor 1964 stromatoporoid sponge
 Actinostromatida - Densastromatidae
Densastroma sp.
Densastroma sp. Flügel 1959 stromatoporoid sponge
Chlorophyceae
 Dasycladales - Diploporaceae
Diplopora sp.
Diplopora sp. Schafhaeutl 1863
1Donald 1906; 2Donald 1902; 3Donald 1905; 4Donald 1905; 5Longstaff 1909; 6Phillips 1848; 7Reed 1921; 8Wagner 2023