Wise Lake Formation, Rifle Hill Member Ostracodes of Iowa: Edenian, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Ostracoda
- Palaeocopida
- Tetradellidae
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Tetradella subquadrans
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Ostracoda
- Palaeocopida
- Primitiidae
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Primitia spinata
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Iowa |
| Coordinates: | 42.0° North, 94.0° West (view map) | ||
| Paleocoordinates: | 19.4° South, 65.5° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | basin |
Time
| Period: | Ordovician | Epoch: | Late Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| *Period: | Late/Upper Ordovician | *Local age/stage: | Edenian |
| Key time interval: | Edenian | ||
| Age range of interval: | 451.1 - 450.4 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Galena | Formation: | Wise Lake | Member: | Rifle Hill |
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: Rifle Hill Member = "Stewartville" Member | |||||
Lithology and environment
| Primary lithology: | dolomite |
| Includes fossils? | Y |
| Lithology description: Dolomite or dolomitic mottled limestone. Lithology from C. O. Leverson, A. J. Gerk, R. E. Sloan, & L. A. Bisagno. General section of the Middle and Late Ordovician strata of Northeastern Iowa, Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35, p.25-39. Edited by R. E. Sloan. | |
| Environment: | carbonate indet. |
| Geology comments: Environmental call by T. Hanson | |
Taphonomy
| Size of fossils: | microfossils |
Collection methods and comments
| Collection methods: | chemical,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 23233 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | T. Hanson | Research group: | marine invertebrate |
| Created: | 2002-07-10 18:44:01 | Last modified: | 2002-07-10 21:44:05 |
| Access level: | the public | Released: | 2002-07-10 18:44:01 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6656. | F. M. Swain. 1987. Middle and Upper Ordovician Ostracoda of Minnesota and Iowa. In R. E. Sloan (ed.), Minnesota Geological Survey Report of Investigations 35:99-101 [S. Holland/T. Hanson/S. Bruning] |