Localities 1 and 2, P. punctuosus zone, Porth y rhaw, Dyfed: Menevian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Agnostida
- Peronopsidae
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Peronopsis ex gr. fallax
(Linnarsson 1869)
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Agnostida
- Spinagnostidae
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Pseudoperonopsis sp.
Harrington 1938
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Cotalagnostus lens
(Grönwall 1902)
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| sensu latu | ||||||||||
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Agnostida
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Phalagnostus cf. nudus
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Agnostida
- Condylopygidae
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Pleuroctenium cf. bifurcatum
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Agnostida
- Ptychagnostidae
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Ptychagnostus ciceroides
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Ptychagnostus punctuosus
(Angelin 1851)
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| Ptychagnostus punctuosus punctuosus | ||||||||||
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Agnostida
- Eodiscidae
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Eodiscus punctatus
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Trilobita
- Redlichiida
- Paradoxididae
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Paradoxides davidis
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Trilobita
- Redlichiida
- Centropleuridae
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Anopolenus henrici
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Trilobita
- Ptychopariida
- Solenopleuridae
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Solenopleurina variolaris
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| synonym of Herse | ||||||||||
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Trilobita
- Holocephalinidae
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Holocephalina cf. primordialis
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Meneviella venulosa
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| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | Wales | County: | Pembrokeshire |
| Coordinates: | 51.9° North, 5.2° West (view map) | ||||
| Paleocoordinates: | 84.0° South, 40.9° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cambrian | Epoch: | Miaolingian |
| 10 m.y. bin: | Cambrian 4 | ||
| Key time interval: | Menevian | Trilobite zone: | Ptychagnostus punctuosus |
| Age range of interval: | 504.50000 - 499.50000 m.y. ago |
Stratigraphy
| Geological group: | Porth-y-rhaw | Formation: | Menevia | Member: | Middle |
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Faunal reported from 0-12.5 m below top of unit, Upper Menevian beds, type section of the Menevian Group, P. punctuosus zone. Locality 2 is on the western cliff section, at approximately the same horizon as locality 1, the type section on the eastern cliff. PJW: This was Menevian group, but this is now the middle member of the Menevia formation within the Porth-y-rhaw group (Fletcher 2017). | |||||
Lithology and environment
| Primary lithology: | massive,coarse,gray lithified sandstone |
| Secondary lithology: | "shale" |
| Lithology description: Coarse, dark grey, massive (<1 m thick) sandstones with shaly interbeds. | |
| Environment: | coastal indet. |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | BMNH |
Metadata
| Database number: | 193783 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Novack-Gottshall |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2018-06-05 13:14:39 | Last modified: | 2019-10-03 11:54:09 |
| Access level: | the public | Released: | 2018-06-05 13:14:39 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 65826. | R. P. S. Jefferies, M. Lewis, and S. K. Donovan. 1987. Protocystites menevensis--a stem-group chordate (Cornuta) from the Middle Cambrian of South Wales. Palaeontology 30(3):429-484 [P. Novack-Gottshall/P. Novack-Gottshall/P. Novack-Gottshall] |