Marcem Quarry, 2 miles west of Gate City: Ashbyan, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Strophomenata
- Strophomenida
- Syndielasmatidae
|
||||||||||
|
Sowerbyites subnasutus n. sp.
Cooper 1956
|
||||||||||
|
Strophomenata
- Strophomenida
- Furcitellidae
|
||||||||||
|
Dactylogonia obtusa
|
||||||||||
|
Rhynchonellata
- Orthida
- Plectorthidae
|
||||||||||
|
Mimella ? laticardinia
|
||||||||||
| Specimens from the Lincolnshire formation at Marcem Quarry west of Gate City have been placed here, although they are larger and with somewhat more inflated pedicle valve than M. laticardinia, but medium-sized specimens from the same place are very close to the Eidson forms. | ||||||||||
|
Rhynchonellata
- Orthida
- Hesperorthidae
|
||||||||||
|
Hesperorthis longirostris
|
||||||||||
|
Rhynchonellata
- Orthida
- Plaesiomyidae
|
||||||||||
|
Dinorthis atavoides
Willard 1928
|
||||||||||
|
Valcourea sp.
Raymond 1911
|
||||||||||
|
Rhynchonellata
- Pentamerida
- Camerellidae
|
||||||||||
|
Camerella elliptica
|
||||||||||
|
Stenolaemata
- Cystoporata
- Constellariidae
|
||||||||||
|
Lunaferamita virginiensis
Utgaard 1981
|
Utgaard 1981 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Virginia |
| Coordinates: | 38.6° North, 82.6° West (view map) | ||
| Paleocoordinates: | 27.9° South, 61.4° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Ashbyan | ||
| Age range of interval: | 457.00000 - 449.80000 m.y. ago |
Stratigraphy
| Formation: | Lincolnshire |
| Local order: | bottom to top |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | black cherty/siliceous "limestone" |
| Lithology description: Limestone, dense, black, cherty | |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
Metadata
| Database number: | 203254 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2019-08-07 13:41:24 | Last modified: | 2019-08-07 14:04:10 |
| Access level: | the public | Released: | 2019-08-07 13:41:24 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 44678. | G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner] |
Secondary references:
| 6113 | J. Utgaard. 1981. Lunaferamita, a new genus of Constellariidae (Bryozoa) with strong cystoporate affinities. Journal of Paleontology 55(5):1058-1070 [S. Holland/T. Hanson/T. Hanson] |