Loc. 8. USGS 28561. Waterfall in tributary creek into Falling Water Creek: Serpukhovian, Arkansas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Bellerophontida
- Bellerophontidae
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Retispira cincta
Gordon and Yochelson 1987
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Gastropoda
- Euomphalina
- Euomphalidae
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Straparollus (Euomphalus) variabilis
Jeffery et al. 1994
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Arkansas | County: | Searcy |
| Coordinates: | 35.7° North, 92.9° West (view map) | ||||
| Paleocoordinates: | 12.2° South, 34.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| Stage: | Serpukhovian | 10 m.y. bin: | Carboniferous 3 |
| Key time interval: | Serpukhovian | ||
| Age range of interval: | 330.90000 - 323.20000 m.y. ago |
Stratigraphy
| Formation: | Imo | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Elvirian (E2b-c). late Chesterian is Serpukhovian according to Mii et al. 1999 (GSA Bull 111:960-973) | |||||
Lithology and environment
| Primary lithology: | concretionary,black,gray lithified sandy grainstone | ||
| Secondary lithology: | "shale" | ||
| Lithology description: ...as much as 104 m of dark-gray to black, fissile, clay shale w/ numerous, large, bright-red, orange, or brown concretions. ...the lower 36 m...contains thin limestones, sandstones, and conglomerates. | |||
| Environment: | offshore | Tectonic setting: | cratonic basin |
| Geology comments: "The environment of deposition...relatively shallow water, low energy offshore area undergoing slow continuous deposition of terrigenous clay with periodic higher-energy incursions of carbonate sediments." | |||
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | USGS |
| Taxonomic list comments:Crinoids, bryozoans, brachiopods, bivalves, corals, nautiloids also present. | |
Metadata
| Also known as: | USGS Locs: 28562. 33 m. east of road on the east side of the creek, 660 m. north of the southeast corner of sec. 18 | ||
| Database number: | 69286 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2007-02-23 23:47:58 | Last modified: | 2007-02-24 01:47:58 |
| Access level: | the public | Released: | 2007-02-23 23:47:57 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 11422. | D. L. Jeffery, R.D. Hoare, R.H. Mapes and C.J. Brown. 1994. Gastropods (Mollusca) from the Imo Formation (Mississippian, Chesterian) of north-central Arkansas. Journal of Paleontology 68(1):58-79 [P. Wagner/P. Wagner/P. Wagner] |