Howellites community, Berwyn Hills (Pen-y-planeau Siltstone) (Ordovician of the United Kingdom)

Also known as Was: Howellites community, Berwyn Hills

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

• local area-level geographic resolution

When: Diplograptus multidens graptolite zone, Pen-y-planeau Siltstone Formation, Soudleyan (458.4 - 457.2 Ma)

• formation-level stratigraphic resolution

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

• Silty mudstone

Size class: macrofossils

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 3301: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 29.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Bryozoa "stick indet.", Arca sp.
Ostracoda
 Hollinocopida - Tetradellidae
Tallinnella scripta
Trilobita
 Trinucleida - Trinucleidae
Broeggerolithus broeggeri
Broeggerolithus broeggeri Bancroft 1929 trilobite
 Asaphida - Asaphidae
"Parabasilicus powisi" = Basilicus
"Parabasilicus powisi" = Basilicus trilobite
 Phacopida - Homalonotidae
Brongniartella sp.
Brongniartella sp. Reed 1918 trilobite
 Phacopida - Calymenidae
Flexicalymene (Reacalymene) limba
Flexicalymene (Reacalymene) limba Shirley 1936 trilobite
 Corynexochida - Illaenidae
Illaenus sp.
Illaenus sp. Dalman 1827 trilobite
x
Craniata
 Craniopsida - Craniopsidae
Paracraniops sp.
Paracraniops sp. Williams 1963
Lingulata
 Lingulida - Obolidae
Lingulella cf. ovata
Strophomenata
 Strophomenida - Rafinesquinidae
"Macrocoelia sp." = Colaptomena, Kjaerina sp., Leptaena sp., Kiaeromena sp.
"Macrocoelia sp." = Colaptomena Cooper 1956
x
Kjaerina sp. Bancroft 1929
x
Leptaena sp. Dalman 1828
x
Kiaeromena sp. Spjeldnaes 1957
x
 Strophomenida - Sowerbyellidae
Eoplectodonta sp., Sowerbyella sp.
Eoplectodonta sp. Kozlowski 1929
x
Sowerbyella sp. Jones 1928
 Strophomenida - Aegiromenidae
Sericoidea sp.
Sericoidea sp. Lindström 1953
x
 Orthotetida - Triplesiidae
Bicuspina spiriferoides, Oxoplecia sp.
Oxoplecia sp. Wilson 1913
Rhynchonellata
 Orthida - Plaesiomyidae
Dinorthis berwynensis
Dinorthis berwynensis Whittington 1938
 Orthida - Hesperorthidae
Dolerorthis sp.
Dolerorthis sp. Schuchert and Cooper 1931
x
 Orthida - Heterorthidae
Heterorthis sp.
 Orthida - Dalmanellidae
Dalmanella sp., Howellites sp., Onniella sp.
Dalmanella sp. Hall and Clarke 1892
Howellites sp. Bancroft 1945
Onniella sp. Bancroft 1928
x
 Orthida - Harknessellidae
Reuschella horderleyensis
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites sp.
Tentaculites sp. von Schlotheim 1820
x
Gastropoda
 Murchisoniina - Hormotomidae
"? Seelya sp." = Plethospira
"? Seelya sp." = Plethospira Ulrich and Scofield 1897 snail
xoriginally entered as "?Seelya sp."
 Bellerophontida - Sinuitidae
Sinuites soudleyensis
Sinuites soudleyensis Reed 1921 snail
 Bellerophontida - Bellerophontidae
Bucanopsis sp.
Bucanopsis sp. Ulrich and Scofield 1897 snail
 Euomphalina - Platyceratidae
Cyclonema crebristria
Cyclonema crebristria M'Coy 1851 snail
Cephalopoda
 Orthocerida - Orthoceratidae
Orthoceras sp.
Orthoceras sp. Breynius 1832
Tergomya
 Cyrtonellida - Cyrtolitidae
Cyrtolites sp.
Cyrtolites sp. Conrad 1838
Bivalvia
 Heteroconchia - Lipanellidae
Goniophorina sp.
Goniophorina sp. Isberg 1934 clam
x
 Modiomorphida - Modiomorphidae
Modiolopsis modiolaris
Modiolopsis modiolaris Conrad 1838 clam
 Ostreida - Vlastidae
Vlasta sp.
Vlasta sp. Barrande 1881 oyster
x
 Myalinida - Ambonychiidae
Psilonychia sp.
Psilonychia sp. Ulrich 1893 clam
x
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily