North Wales Rawtheyan Assemblage 4D, Rhwlas Limestone: Rawtheyan, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Orthida
- Dicoelosiidae
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Dicoelosia sp.
King 1850
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Rhynchonellata
- Orthida
- Dalmanellidae
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Dalmanella sp.
Hall and Clarke 1892
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Howellites sp.
(Bancroft 1945)
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| original and current combination Resserella (Howellites) | ||||||||||
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Rhynchonellata
- Orthida
- Plectorthidae
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Schizophorella sp.
Reed 1917
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Rhynchonellata
- Orthida
- Rhactorthidae
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Rhactorthis sp.
Williams 1963
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Rhynchonellata
- Orthida
- Productorthidae
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Nicolella sp.
Reed 1917
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Rhynchonellata
- Orthida
- Orthidae
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Orthambonites sp.
Pander 1830
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Rhynchonellata
- Orthida
- Glyptorthidae
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Glyptorthis sp.
Foerste 1914
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Rhynchonellata
- Orthida
- Hesperorthidae
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Dolerorthis sp.
Schuchert and Cooper 1931
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Ptychopleurella sp.
Schuchert and Cooper 1931
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides sp.
Schuchert and Cooper 1931
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Anisopleurella sp.
Cooper 1956
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Sowerbyella sp.
Jones 1928
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Strophomenata
- Strophomenida
- Christianiidae
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Christiania sp.
Hall and Clarke 1892
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Strophomenata
- Strophomenida
- Aegiromenidae
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? Aegiria sp.
Opik 1933
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| originally entered as "Aegiria? sp." | ||||||||||
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Strophomenata
- Strophomenida
- Leptestiidae
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Leangella sp.
Opik 1933
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Sampo sp.
Opik 1933
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Trilobita
- Odontopleurida
- Odontopleuridae
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Diacanthaspis sp.
Whittington 1941
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= Diacanthaspis decacantha
Angelin 1854
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Whittington 1968 | |||||||||
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Whittingtonia sp.
Prantl and Pribyl 1949
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= Whittingtonia whittintoni
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Whittington 1968 | |||||||||
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Trilobita
- Trinucleida
- Raphiophoridae
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Raphiophorus sp.
Angelin 1854
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Lonchodomas sp.
Angelin 1854
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= Lonchodomas tumidus
Forbes 1849
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Whittington 1968 | |||||||||
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Trilobita
- Trinucleida
- Trinucleidae
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Nankinolithus sp.
Lu 1957
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Tretaspis sp.
M'Coy 1849
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= Tretaspis kiaeri
Stormer 1930
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Whittington 1968 | |||||||||
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Trilobita
- Asaphida
- Asaphidae
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Opsimasaphus radiates
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Whittington 1968 | |||||||||
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Trilobita
- Asaphida
- Remopleurididae
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Remopleurides sp.
Portlock 1843
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= Remopleurides cf. colbii
Portlock 1843
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Whittington 1968 | |||||||||
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Amphitryon sp.
Hawle and Corda 1874
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= Amphitryon radians
Barrande 1846
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Whittington 1968 | |||||||||
| synonym of Amphitryon murchisonii | ||||||||||
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Trilobita
- Asaphida
- Cyclopygidae
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Cyclopyge cf. marginata
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Whittington 1968 | |||||||||
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Trilobita
- Lichida
- Lichidae
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Platylichas sp.
(Gürich 1901)
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= Platylichas glenos
Whittington 1962
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Whittington 1968 | |||||||||
| recombined as Allolichas glenos | ||||||||||
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Trilobita
- Corynexochida
- Styginidae
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Bronteopsis sp.
Nicholson and Etheridge 1879
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Stygina sp.
Salter 1853
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Phillipsinella sp.
Novak 1885
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= Phillipsinella parabola
Stormer 1953
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Whittington 1968 | |||||||||
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Trilobita
- Corynexochida
- Illaenidae
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Illaenus sp.
Dalman 1827
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| originally entered as "Illaenus" sp." | ||||||||||
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Parillaenus sp.
Jaanusson 1954
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Trilobita
- Phacopida
- Pterygometopidae
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Calyptaulax sp.
Cooper 1930
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= Calyptaulax cf. norvegicus
Stormer 1945
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Whittington 1968 | |||||||||
| [Calyptaulax cf. marginata] | ||||||||||
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Trilobita
- Phacopida
- Dalmanitidae
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Duftonia sp.
Dean 1959
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Trilobita
- Phacopida
- Calymenidae
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Pharostoma sp.
Hawle and Corda 1847
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= Pharostoma cf. obtusum
McCoy 1846
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Whittington 1968 | |||||||||
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Trilobita
- Phacopida
- Encrinuridae
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Oedicybele sp.
Whittington 1938
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= Oedicybele kingi
Whittington 1938
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Whittington 1968 | |||||||||
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Staurocephalus sp.
Barrande 1846
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= Staurocephalus clavifrons
Angelin 1878
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Whittington 1968 | |||||||||
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Cybeloides sp.
Slocum 1913
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= Cybeloides (Paracybeloides) girvanensis
Reed 1906
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Whittington 1968 | |||||||||
| original and current combination Cybeloides girvanensis | ||||||||||
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Encrinuroides sp.
Reed 1931
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= Encrinuroides sexcostatus
Salter in Phillips and Salter 1848
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Whittington 1968 | |||||||||
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Dindymene sp.
Hawle and Corda 1847
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= Dindymene ornata
Linnarsson 1869
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Whittington 1968 | |||||||||
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Trilobita
- Phacopida
- Cheiruridae
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Sphaerocoryphe sp.
Angelin 1854
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Pseudosphaerexochus sp.
(Schmidt 1881)
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= Pseudosphaerexochus octolobatus
M'Coy 1849
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Whittington 1968 | |||||||||
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Ceraurinella sp.
Cooper 1953
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= Ceraurinella intermedia
Kielan 1955
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Whittington 1968 | |||||||||
| recombined as Ceraurinium intermedia | ||||||||||
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Trilobita
- Proetida
- Proetidae
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? Astroproetus berwynensis
Whittington 1966
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Whittington 1968 | |||||||||
| synonym of Ogmocnemis irregularis | ||||||||||
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Trilobita
- Proetida
- Otarionidae
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Otarion sp.
Zenker 1833
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Trilobita
- Harpetida
- Harpetidae
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Harpes sp.
Goldfuss 1839
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| originally entered as "Harpes" sp." | ||||||||||
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Agnostida
- Metagnostidae
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Arthrorhachis sp.
Hawle and Corda 1847
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Trinodus sp.
M'Coy 1846
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= Trinodus tardus
Barrande 1846
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Whittington 1968 | |||||||||
| recombined as Agnostus tardus | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | Wales |
| Coordinates: | 53.0° North, 3.0° West (view map) | ||
| Paleocoordinates: | 45.7° South, 16.9° West | ||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| *Period: | Late/Upper Ordovician | *Epoch: | Middle Ashgill |
| *International age/stage: | Rawtheyan | *Local age/stage: | Rawtheyan |
| Key time interval: | Rawtheyan | ||
| Age range of interval: | 448.90000 - 445.20000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Rhiwlas Limestone | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Base of Moelfryn Mudstone, in Upper Bala Group | |||||
Lithology and environment
| Primary lithology: | gray lithified argillaceous "limestone" |
| Environment: | offshore |
| Geology comments: Fine-grained, pale grey, muddy bioclastic limestone | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 3675 | ||
| Authorizer: | A. Miller, M. Hopkins | Enterer: | P. Novack-Gottshall, M. Hopkins |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 1999-08-06 12:28:43 | Last modified: | 2018-04-14 23:23:04 |
| Access level: | the public | Released: | 1999-08-06 12:28:43 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 171. | D. A. Bassett, H. B. Whittington, and A. Williams. 1966. The Stratigraphy of the Bala District, Merionethshire. Quarterly Journal of the Geological Society of London 122(3):219-269 [A. Miller/P. Novack-Gottshall/P. Wagner] |
Secondary references:
| 63267 | H. B. Whittington. 1968. The Ordovician trilobites of the Bala Area, Merioneth. Part IV. Monograph of the Palaeontographical Society 122(520):93-138 [M. Hopkins/M. Hopkins] |