USGS 21728-PC: Morrowan, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Bellerophontida
- Bellerophontidae
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Bellerophon cf. crassus
Meek and Worthen 1860
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| recombined as Waagenella crassus | ||||||||||
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Strophomenata
- Orthotetida
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Strophomenida indet.
Opik 1934
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| orthotetoid gen. et sp. indet. | ||||||||||
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= Orthotetida indet.
Waagen 1884
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Williams et al. 2000 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Carbon |
| Coordinates: | 41.8° North, 107.3° West (view map) | ||||
| Paleocoordinates: | 2.2° North, 36.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Carboniferous | Epoch: | Pennsylvanian |
| Stage: | Bashkirian | 10 m.y. bin: | Carboniferous 4 |
| *Period: | Late/Upper Carboniferous | *Epoch: | Bashkirian | *Local age/stage: | Morrowan |
| Key time interval: | Morrowan | ||
| Age range of interval: | 323.20000 - 318.40000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
Lithology and environment
| Primary lithology: | red lithified silty,sandy,calcareous "shale" | ||
| Secondary lithology: | gypsiferous,shelly/skeletal "limestone" | ||
| Lithology description: horseshoe: predominantly fissile, platy or blocky siltstone, shale, and mudstone. weathers bright red to grayish red or purple. thin beds and lenses of platy, white to red, fine grained, commonly calcareous quartz sandstone occur sporadically throughout member. thin beds of silty, sandy, or argillaceous limestone are rare in central wy, significant proportion in western wy. dolomite is a rare constituent. limestone beds are either fine grained and unfossiliferous or fine to medium grained and contain a shelly fauna. anhydrite and gypsum present at several localities. represents offshore marine facies of the transgressing amsden sea. | |||
| Environment: | offshore | Tectonic setting: | cratonic basin |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | USGS |
| Collection method comments: "Collected by W.J. Sando and K.R. Moore, 1964." | |
Metadata
| Also known as: | Sando et al. Meadow Ranch Loc.8 | ||
| Database number: | 5680 | ||
| Authorizer: | J. Alroy, M. Clapham | Enterer: | M. Sommers, M. Clapham |
| Modifier: | C. Visaggi | Research group: | marine invertebrate |
| Created: | 1999-11-15 14:13:42 | Last modified: | 2004-03-11 16:25:11 |
| Access level: | the public | Released: | 1999-11-15 14:13:42 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 349. | W. J. Sando, M., J.r. Gordon, and J. T. Dutro. 1975. Stratigraphy and geologic history of the Amsden Formation (Mississippian and Pennsylvanian) of Wyoming. United States Geological Survey Professional Paper 848A:1-83 [J. Alroy/M. Sommers/P. Wagner] |
Secondary references:
| 18078 | A. Williams, S. J. Carlson, C. H. C. Brunton, L. E. Holmer, L. E. Popov, M. Mergl, J. R. Laurie, M. G. Bassett, L. R. M. Cocks, J.-Y. Rong, S. S. Lazarev, R. E. Grant, P. R. Racheboeuf, Y.-G. Jin, B. R. Wardlaw, D. A. T. Harper, and A. D. Wright and M. 2000. Part H Brachiopoda (revised): Volumes 2 & 3, Linguliformea, Craniiformea, Rhynchonelliformea (part). Treatise on Invertebrate Paleontology 1-919 [W. Kiessling/W. Kiessling/W. Kiessling] |