Stark Shale Member, Richfield, Sarpy County, NE (Schram, 1984, Location 3): Missourian, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Malacostraca
- Stomatopoda
- Gorgonophontidae
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Gorgonophontes peleron
Schram 1984
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3 specimens | ||||||
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Eurypterida
- Mycteropidae
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Mycterops whitei
Schram 1984
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1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Sarpy County |
| Coordinates: | 41.1° North, 96.2° West (view map) | ||||
| Paleocoordinates: | 0.9° South, 27.7° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Carboniferous | Epoch: | Pennsylvanian |
| Stage: | Kasimovian | 10 m.y. bin: | Carboniferous 5 |
| Key time interval: | Missourian | ||
| Age range of interval: | 305.9 - 303.7 m.y. ago |
Stratigraphy
| Geological group: | Kansas City | Formation: | Dennis | Member: | Stark Shale |
| Stratigraphic resolution: | member |
Lithology and environment
| Primary lithology: | fine,black "shale" |
| Lithology description: the black shales are "fine grained and sheety in form, with bedding slabs not particularly thin or paperlike" | |
| Environment: | offshore |
| Geology comments: "black shales seem to represent a deep-water phase of a transgressive-regressive sequence" | |
Taphonomy
| Modes of preservation: | mold/impression,adpression,original carbon,replaced with pyrite |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | excellent |
Collection methods and comments
| Collection excludes: | all macrofossils |
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:In addition to the arthropods, the shale contains abundant conodonts and fish spines | |
Metadata
| Database number: | 50934 | ||
| Authorizer: | J. Alroy | Enterer: | D. Lamb |
| Modifier: | R. Plotnick | Research group: | marine invertebrate |
| Created: | 2005-05-24 17:34:23 | Last modified: | 2023-10-30 12:31:51 |
| Access level: | the public | Released: | 2005-05-24 17:34:23 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 13598. | F. R. Schram. 1984. Upper Pennsylvanian arthropods from black shales of Iowa and Nebraska. Journal of Paleontology 58(1):197-209 [J. Alroy/D. Lamb/D. Lamb] |
Secondary references:
| 86213 | M.M. Joachimski and L.L. Lambert. 2015. Salinity contrast in the US Midcontinent Sea during Pennsylvanian glacio-eustatic highstands: Evidence from conodont apatite δ18O. Palaeogeography, Palaeoclimatology, Palaeoecology 433:71-80 [R. Plotnick/R. Plotnick] |