Pterinea tenuistriata Assoc., Lower Bringewood equivalents, east-central Wales: Gorstian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
||||||||||
|
Lingula lata
Portlock 1843
|
||||||||||
|
Pterobranchia
|
||||||||||
|
Graptolithina indet.
Bronn 1849
|
||||||||||
| holoplanktic graptolites | ||||||||||
|
Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
|
||||||||||
|
Microsphaeridiorhynchus nucula
(Sowerby 1839)
|
||||||||||
| may have been transported into basin attached to benthic algae | ||||||||||
|
Rhynchonellata
- Rhynchonellida
- Hebetoechiidae
|
||||||||||
|
Sphaerirhynchia wilsoni
(de Sowerby 1816)
|
||||||||||
| may have been transported into basin attached to benthic algae | ||||||||||
|
Strophomenata
- Strophomenida
- Aegiromenidae
|
||||||||||
|
Aegiria grayi
(Davidson 1849)
|
||||||||||
| recombined as Jonesea grayi | ||||||||||
| may have been transported into basin attached to benthic algae [entered as Aegiria gray] | ||||||||||
|
Bivalvia
- Cyrtodontida
- Cardiolidae
|
||||||||||
|
Cardiola cornucopiae
|
||||||||||
|
Bivalvia
- Ostreida
- Pterineidae
|
||||||||||
|
Pterinea tenuistriata
|
||||||||||
|
Cephalopoda
|
||||||||||
|
Nautiloidea indet.
Agassiz 1847
|
||||||||||
| nektic orthocones | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | England |
| Coordinates: | 52.0° North, 3.0° West (view map) | ||
| Paleocoordinates: | 27.9° South, 13.0° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | local area |
Time
| Period: | Silurian | Epoch: | Ludlow |
| Stage: | Gorstian | 10 m.y. bin: | Silurian 2 |
| *International age/stage: | Late/Upper Gorstian | ||
| Key time interval: | Gorstian | ||
| Age range of interval: | 427.40000 - 425.60000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Lower Bringewood equivalents (e.g. Pterinea Beds). | |||||
Lithology and environment
| Primary lithology: | planar lamination siltstone |
| Lithology description: "...parallel laminated flags with alternating dark and light layers, possibly of seasonal origin and characteristic today of seas with stagnant to dysaerobic bottom waters." Lawson (ref. 6658) states: "laminated silts". | |
| Environment: | marine indet. |
| Geology comments: "The low oxygen level would correlate with the rare benthos. Its facial position suggests a BA 4 assignment, which is also similar to many of the restrictive bivalve associations in the Barrandian." | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Percent abundances are given, based on 61 samples. | |
Metadata
| Database number: | 23159 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Uhen | Research group: | marine invertebrate |
| Created: | 2002-07-10 08:04:54 | Last modified: | 2018-11-26 18:12:22 |
| Access level: | the public | Released: | 2002-07-10 08:04:54 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6653. | J. D. Lawson. 1999. Atkins' Lower Bringewood associations of Wales and the Welsh Borderland. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 380-387 [M. Foote/M. Foote/M. Foote] |