Dalmanella community, Berwyn Hills (Cwm Rhiwarth) (Ordovician of the United Kingdom)

Also known as Was: Dalmanella community, Berwyn Hills, Wales, UK

Where: Walers, United Kingdom (53.0° N, 3.0° W: paleocoordinates 52.2° S, 17.8° W)

• local area-level geographic resolution

When: Upper Member (Cwm Rhiwarth Formation), Longvillian (457.2 - 455.0 Ma)

• Top of formatin

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, silty sandstone

• coarse to medium-grained sandstone and siltstone; midshelf

Size class: macrofossils

Preservation: cast

Primary reference: R. K. Pickerill and P. J. Brenchley. 1979. Caradoc marine benthic communities of the South Berwyn Hills, North Wales. Palaeontology 22:229-264 [A. Miller/P. Novack-Gottshall/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 3304: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 29.07.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
"Pteriaceid" indet., Dalmanella indica
Ostracoda
 Hollinocopida - Tetradellidae
Tallinnella scripta
Trilobita
 Proetida - Otarionidae
Otarion sp.
Otarion sp. Zenker 1833 trilobite
 Phacopida - Homalonotidae
Brongniartella sp., Brongniartella cf. ascripta, Brongniartella minor
Brongniartella sp. Reed 1918 trilobite
Brongniartella minor Salter 1852 trilobite
 Phacopida - Calymenidae
Flexicalymene caractaci, Flexicalymene planimarginata
Flexicalymene caractaci Salter 1865 trilobite
Flexicalymene planimarginata Reed 1906 trilobite
 Phacopida - Pterygometopidae
"Chasmops cambrensis" = Scopelochasmops cambrensis
"Chasmops cambrensis" = Scopelochasmops cambrensis Whittington 1962 trilobite
 Phacopida - Acastidae
Kloucekia apiculata
Kloucekia apiculata McCoy 1851 trilobite
 Trinucleida - Trinucleidae
Broeggerolithus soudleyensis, Broeggerolithus broeggeri, Broeggerolithus nicholsoni
Broeggerolithus broeggeri Bancroft 1929 trilobite
Broeggerolithus nicholsoni Reed 1910 trilobite
 Asaphida - Asaphidae
"Parabasilicus sp." = Basilicus
"Parabasilicus sp." = Basilicus Salter 1849 trilobite
x
 Lichida - Lichidae
Conolichas sp.
Conolichas sp. Dames 1877 trilobite
Bryozoa
  -
Bryozoa "stick indet."
Bryozoa "stick indet." Ehrenberg 1831
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites sp.
Tentaculites sp. von Schlotheim 1820
Lingulata
 Lingulida - Obolidae
Lingulella sp.
Lingulella sp. Salter 1866
Craniata
 Craniopsida - Craniopsidae
Paracraniops sp.
Paracraniops sp. Williams 1963
x
Rhynchonellata
 Protorthida - Skenidiidae
Skenidioides costatus
 Rhynchonellida - Trigonirhynchiidae
Rostricellula sp.
Rostricellula sp. Ulrich and Cooper 1942
x
 Orthida - Dalmanellidae
Howellites antiquior, Dalmanella horderleyensis
Dalmanella horderleyensis Whittington 1938
 Orthida - Productorthidae
Nicolella sp.
Nicolella sp. Reed 1917
x
 Orthida - Plaesiomyidae
"Dinorthis angusta" = Dinorthis berwynensis angusta1, Dinorthis cf. flabellulum
"Dinorthis angusta" = Dinorthis berwynensis angusta1 Williams 1963
Dinorthis berwynensis angusta
Dinorthis cf. flabellulum Sowerby and Murchison 1839
 Orthida - Hesperorthidae
"Dolerorthis prolixa" = Dolerorthis duftonensis prolixa1
"Dolerorthis prolixa" = Dolerorthis duftonensis prolixa1 Williams 1963
Dolerorthis duftonensis prolixa
Strophomenata
 Orthotetida - Triplesiidae
Oxoplecia sp., Bicuspina spiriferoides
Oxoplecia sp. Wilson 1913
 Strophomenida - Sowerbyellidae
Sowerbyella sp.
Sowerbyella sp. Jones 1928
 Strophomenida - Rafinesquinidae
"Kiaeromena kjerulfi" = Kiaeromena (Kiaeromena) kjerulfi, Leptaena sp., Leptaena ventricosa, Kjaerina sp., Kjaerina hedstroemi, Kjaerina jonesi, "Macrocoelia expansa" = Colaptomena expansa, "Macrocoelia prolata" = Colaptomena expansa prolata, Kjerulfina sp.
"Kiaeromena kjerulfi" = Kiaeromena (Kiaeromena) kjerulfi Holtedahl 1916
Leptaena sp. Dalman 1828
Leptaena ventricosa Williams 1963
Kjaerina sp. Bancroft 1929
Kjaerina hedstroemi Bancroft 1929
Kjaerina jonesi Bancroft 1929
"Macrocoelia expansa" = Colaptomena expansa de Sowerby and Murchison 1839
"Macrocoelia prolata" = Colaptomena expansa prolata Williams 1963
Kjerulfina sp. Bancroft 1929
x
 Strophomenida - Strophomenidae
Strophomenidae indet., Strophomena sp.
Strophomena sp. Rafinesque and De Blainville 1824
x
Cephalopoda
 Orthocerida - Orthoceratidae
Orthoceras sp.
Orthoceras sp. Breynius 1832
Gastropoda
 Euomphalina - Platyceratidae
Cyclonema sp.
Cyclonema sp. Hall 1852 snail
x
 Murchisoniina - Lophospiridae
Lophospira sp.
Lophospira sp. Whitfield 1886 snail
 Murchisoniina -
Murchisonioidea indet.2
Murchisonioidea indet.2 Koken 1896 snail
x
 Bellerophontida - Bellerophontidae
Bellerophontidae indet.
Bellerophontidae indet. M'Coy 1851 snail
 Bellerophontida - Sinuitidae
Sinuites spp.
Sinuites spp. Koken 1896 snail
Tergomya
 Cyrtonellida - Cyrtolitidae
Cyrtolites sp.
Cyrtolites sp. Conrad 1838
Bivalvia
 Modiomorphida -
"Modiomorphacea indet." = Modiomorphoidea
"Modiomorphacea indet." = Modiomorphoidea Miller 1877 clam
x
 Modiomorphida - Modiomorphidae
Byssodesma sp., Colpomya sp.
Byssodesma sp. Isberg 1934 clam
x
Colpomya sp. Ulrich 1893 clam
x
Crinoidea
  -
Crinoidea "ossicles"
Crinoidea "ossicles" Miller 1821 Sea lily
Anthozoa
 Favositida - Favositidae
Favosites sp.
Favosites sp. Lamarck 1816 tabulate coral
x
1Wagner 2020; 2Wagner 2023