Pontyfeni Fm, B. rushtoni biozone, Whitland, UK: Arenig, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Agnostida
Leiagnostus sp. Jaekel 1909
Agnostida - Metagnostidae
Arthrorhachis sp. Hawle and Corda 1847
Corrugatagnostus sp. Kobayashi 1939
Segmentagnostus sp. Pek 1977
Trilobita - Corynexochida - Illaenidae
Ectillaenus sp. Salter 1867
Trilobita - Ptychopariida - Shumardiidae
Shumardia sp. Billings 1862
Trilobita - Trinucleida - Dionididae
? Dionidella sp. Prantl and Pribyl 1950
originally entered as "Dionidella? sp."
Trilobita - Trinucleida - Raphiophoridae
Ampyx sp. (Dalman 1827)
Trilobita - Trinucleida - Trinucleidae
Bergamia rushtoni
? Stapeleyella sp. Whittard 1955
originally entered as "Stapeleyella? sp."
Trilobita - Asaphida - Cyclopygidae
Sagavia sp. Koroleva 1967
Prospectatrix sp. Fortey 1981
Cyclopyge sp. Hawle and Corda 1847
Circulocrania sp. Fortey and Owens 1987
Microparia sp. Hawle and Corda 1847
Bohemilla sp. Barrande 1872
Pricyclopyge sp. Richter and Richter 1954
Psilacella sp. Whittard 1952
Ellipsotaphrus sp. Whittard 1952
Girvanopyge sp. Kobayashi 1960
Degamella sp. Marek 1961
Trilobita - Asaphida - Nileidae
Barrandia sp. M'Coy 1849
Illaenopsis sp. Salter 1865
Trilobita - Odontopleurida - Odontopleuridae
Selenopeltis sp. Hawle and Corda 1847
Trilobita - Phacopida - Dalmanitidae
Ormathops sp. Delo 1935
Trilobita - Phacopida - Homalonotidae
Colpocoryphe sp. Novak and Perner 1918
Trilobita - Phacopida - Pliomeridae
Placoparia sp. Hawle and Corda 1847
Pterobranchia - Graptoloidea - Phyllograptidae
Tetragraptus sp. Salter 1863
Pterobranchia - Graptoloidea - Tetragraptidae
Pseudotrigonograptus sp.
Pterobranchia - Graptoloidea - Dichograptidae
Didymograptus sp. McCoy 1851
Stylophora - Mitrata
Lagynocystis sp.
Mitrocystella sp.
Stylophora - Mitrata - Kirkocystidae
Anatifopsis sp. Barrande 1872
Guichenocarpos sp.
Balanocystites sp.
Stylophora - Cornuta - Hanusiidae
Reticulocarpos sp.
Stylophora - Cornuta - Cothurnocystidae
Cothurnocystis sp. Bather 1913
see common names

Geography
Country:United Kingdom State/province:England
Coordinates: 52.0° North, 5.0° West (view map)
Paleocoordinates:66.0° South, 20.5° West
Geographic resolution:local area
Time
Period: Ordovician
10 m.y. bin: Ordovician 2
*Period:Early/Lower Ordovician *Epoch:Late/Upper Arenig
Key time interval: Arenig Trilobite zone:  Bergamia rushtoni
Age range of interval: 477.7 - 468.4 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Pontyfenni
Stratigraphic resolution:formation
Stratigraphy comments: Sometimes Pont y Fenni
Lithology and environment
Primary lithology: lithified "shale"
Secondary lithology: chert
Environment:marine indet.
Geology comments: Dark mudstone with siliceous nodules; deep (> 200 m) but oxygenated setting with blind trilobites
Taphonomy
Modes of preservation:mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:3704
Authorizer:A. Miller Enterer:P. Novack-Gottshall
Modifier:P. Wagner Research group:marine invertebrate
Created:1999-08-07 09:48:23 Last modified:2019-09-18 23:44:27
Access level:the public Released:1999-08-07 09:48:23
Creative Commons license:CC BY
Reference information

Primary reference:
173. 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]