Pontyfeni Fm, B. rushtoni biozone, Whitland, UK (Ordovician of the United Kingdom)

Where: England, United Kingdom (52.0° N, 5.0° W: paleocoordinates 66.0° S, 20.5° W)

• local area-level geographic resolution

When: Bergamia rushtoni trilobite zone, Pontyfenni Formation, Arenig (478.6 - 466.0 Ma)

• Sometimes Pont y Fenni

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified shale and chert

• Dark mudstone with siliceous nodules; deep (> 200 m) but oxygenated setting with blind trilobites

Size class: macrofossils

Preservation: mold/impression

Primary reference: R. A. Fortey and R. M. Owens. 1978. Early Ordovician (Arenig) stratigraphy and faunas of the Carmarthen District, southwest Wales. Bulletin of the British Museum of Natural History (Geology) 30(3):225-294 [A. Miller/P. Novack-Gottshall/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3704: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 07.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Odontopleurida - Odontopleuridae
Selenopeltis sp.
Selenopeltis sp. Hawle and Corda 1847 trilobite
 Ptychopariida - Shumardiidae
Shumardia sp.
Shumardia sp. Billings 1862 trilobite
 Asaphida - Cyclopygidae
Sagavia sp., Prospectatrix sp., Degamella sp., Circulocrania sp., Cyclopyge sp., Microparia sp., Pricyclopyge sp., Girvanopyge sp., Psilacella sp., Ellipsotaphrus sp., Bohemilla sp.
Sagavia sp. Koroleva 1967 trilobite
Prospectatrix sp. Fortey 1981 trilobite
Degamella sp. Marek 1961 trilobite
Circulocrania sp. Fortey and Owens 1987 trilobite
Cyclopyge sp. Hawle and Corda 1847 trilobite
Microparia sp. Hawle and Corda 1847 trilobite
Pricyclopyge sp. Richter and Richter 1954 trilobite
Girvanopyge sp. Kobayashi 1960 trilobite
Psilacella sp. Whittard 1952 trilobite
Ellipsotaphrus sp. Whittard 1952 trilobite
Bohemilla sp. Barrande 1872 trilobite
 Asaphida - Nileidae
Barrandia sp., Illaenopsis sp.
Barrandia sp. M'Coy 1849 trilobite
Illaenopsis sp. Salter 1865 trilobite
 Trinucleida - Dionididae
? Dionidella sp.
? Dionidella sp. Prantl and Pribyl 1950 trilobite
originally entered as "Dionidella? sp."
 Trinucleida - Trinucleidae
Bergamia rushtoni, ? Stapeleyella sp.
? Stapeleyella sp. Whittard 1955 trilobite
originally entered as "Stapeleyella? sp."
 Trinucleida - Raphiophoridae
Ampyx sp.
Ampyx sp. Dalman 1827 trilobite
 Corynexochida - Illaenidae
Ectillaenus sp.
Ectillaenus sp. Salter 1867 trilobite
 Phacopida - Homalonotidae
Colpocoryphe sp.
Colpocoryphe sp. Novak and Perner 1918 trilobite
 Phacopida - Dalmanitidae
Ormathops sp.
Ormathops sp. Delo 1935 trilobite
 Phacopida - Pliomeridae
Placoparia sp.
Placoparia sp. Hawle and Corda 1847 trilobite
Artiopoda
 Agnostida -
Leiagnostus sp.
Leiagnostus sp. Jaekel 1909
 Agnostida - Metagnostidae
Arthrorhachis sp., "Corrugatagnostus sp." = Corrugatagnostus, "Segmentagnostus sp." = Corrugatagnostus
Arthrorhachis sp. Hawle and Corda 1847
"Corrugatagnostus sp." = Corrugatagnostus Kobayashi 1939
"Segmentagnostus sp." = Corrugatagnostus Kobayashi 1939
Pterobranchia
 Graptoloidea - Phyllograptidae
Tetragraptus sp.
Tetragraptus sp. Salter 1863 graptolite
 Graptoloidea - Tetragraptidae
Pseudotrigonograptus sp.
 Graptoloidea - Dichograptidae
Didymograptus sp.
Didymograptus sp. McCoy 1851 graptolite
Stylophora
 Cornuta - Cothurnocystidae
Cothurnocystis sp.
Cothurnocystis sp. Bather 1913
 Cornuta - Hanusiidae
Reticulocarpos sp.
 Mitrata -
Mitrocystella sp.
 Mitrata - Kirkocystidae
"Anatifopsis sp." = Anatifopsis, "Guichenocarpos sp." = Anatifopsis, Balanocystites sp.
"Anatifopsis sp." = Anatifopsis Barrande 1872
"Guichenocarpos sp." = Anatifopsis Barrande 1872
 Mitrata -
Lagynocystis sp.