USGS "blue file" Loc. 14102: Serpukhovian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Orthida
- Rhipidomellidae
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Rhipidomella sp. n. sp.
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Montana | County: | Golden Valley |
| Coordinates: | 46.7° North, 109.1° West (view map) | ||||
| Paleocoordinates: | 3.9° North, 36.8° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| Stage: | Serpukhovian | 10 m.y. bin: | Carboniferous 3 |
| *Period: | Early/Lower Carboniferous | *Epoch: | Serpukhovian | *Local age/stage: | Late/Upper Chesterian |
| Key time interval: | Serpukhovian | ||
| Age range of interval: | 330.90000 - 323.20000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Heath | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Lower Heath. JA: late Chesterian is Serpukhovian according to Mii et al. 1999 (GSA Bull 111:960-973) | |||||
Lithology and environment
| Primary lithology: | brown,gray lithified silty,sandy "limestone" | ||
| Secondary lithology: | gray,green silty "shale" | ||
| Lithology description: shale, black, fissile, noncalcareous, contains nodules and thin lenticular layers of limestone. limestone, dark gray to brown, silty, sandy textured, poorly bedded, interbeded with greenish gray silty shale. | |||
| Environment: | offshore | Tectonic setting: | cratonic basin |
| Geology comments: Some of the upper Heath MAY be estuarine/non-marine as noted by the author. These localities contain wood and other plant fragments, are non-calcareous and contain no marine fossils. These localities have been omitted by me [MS]. | |||
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USGS |
| Collection method comments: Collected by Gardner and others (1946) as their locality 44-37-138 | |
Metadata
| Database number: | 5648 | ||
| Authorizer: | J. Alroy | Enterer: | M. Sommers |
| Modifier: | J. Alroy | Research group: | marine invertebrate |
| Created: | 1999-11-09 14:40:02 | Last modified: | 2006-08-06 21:32:26 |
| Access level: | the public | Released: | 1999-11-09 14:40:02 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 348. | W. H. Easton. 1962. Carboniferous formations and faunas of central Montana. United States Geological Survey Professional Paper 348:1-126 [J. Alroy/M. Sommers/M. Uhen] |