USGS 8772, Ramsey Bottom: Brigantian, Arkansas
collected by H.D. Miser, M. Gordon, T.A. Hendricks 1940
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Goniatitida
- Delepinoceratidae
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Goniatites choctawensis
Shumard 1863
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| recombined as Choctawites choctawensis | ||||||||||
| (2 measurements) | ||||||||||
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Cephalopoda
- Goniatitida
- Goniatitidae
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Goniatites granosus
Portlock 1843
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Cephalopoda
- Goniatitida
- Neoglyphioceratidae
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Neoglyphioceras subcirculare
(Miller 1889)
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| recombined as Lusitanites subcircularis | ||||||||||
| (2 measurements) | ||||||||||
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Cephalopoda
- Goniatitida
- Girtyoceratidae
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Girtyoceras limatum
(Miller and Faber 1892)
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| recombined as Eumorphoceras (Sulcogirtyoceras) limatum | ||||||||||
| (4 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Arkansas |
| Coordinates: | 35.7° North, 91.6° West (view map) | ||
| Paleocoordinates: | 13.9° South, 34.7° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| Stage: | Visean | 10 m.y. bin: | Carboniferous 2 |
| Key time interval: | Brigantian | Ammonoid zone: | Goniatites granosus |
| Age range of interval: | 336.30000 - 330.90000 m.y. ago |
Stratigraphy
| Formation: | Ruddell | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Ruddell shale, middle part; zone of phosphatic nodules about 40 ft thick. | |||||
Lithology and environment
| Primary lithology: | nodular,phosphatic lithified "shale" |
| Lithology description: Zone of phosphatic nodules | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | H.D. Miser, M. Gordon, T.A. Hendricks | Collection dates: | 1940 |
Metadata
| Database number: | 157816 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2014-07-04 21:08:17 | Last modified: | 2014-07-04 21:08:17 |
| Access level: | the public | Released: | 2014-07-04 21:08:17 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 11419. | M. Gordon. 1964. Carboniferous Cephalopods of Arkansas. United States Geological Survey Professional Paper 460:1-322 [J. Alroy/C. Simpson/M. Clapham] |