Maquoketa Formation, Elgin Member Ostracodes of Minnesota: Edenian - Maysvillian, Minnesota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Ostracoda
- Palaeocopida
- Bolliidae
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| "Bollia" regularis | ||||||||||
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unclassified
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Ostracoda
- Palaeocopida
- Bolliidae
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Quasibollia ridicula
(Keenan 1951)
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Ostracoda
- Palaeocopida
- Aechminidae
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Ostracoda
- Palaeocopida
- Soanellidae
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Ostracoda
- Palaeocopida
- Aparchitidae
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Ostracoda
- Palaeocopida
- Schmidtellidae
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Ostracoda
- Palaeocopida
- Primitiidae
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Ostracoda
- Palaeocopida
- Hollinidae
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Ostracoda
- Palaeocopida
- Euprimitiidae
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Ostracoda
- Palaeocopida
- Beyrichiidae
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| "Beyrichia" irregularis | ||||||||||
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Ostracoda
- Palaeocopida
- Leperditellidae
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Ostracoda
- Palaeocopida
- Cryptophyllidae
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Ostracoda
- Palaeocopida
- Eridoconchidae
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Ostracoda
- Palaeocopida
- Kloedenellidae
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Ostracoda
- Podocopida
- Bairdiidae
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unclassified
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Ostracoda
- Podocopida
- Bythocyprididae
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| "Bythocypris" furnishi | ||||||||||
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Ostracoda
- Podocopida
- Bairdiocyprididae
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unclassified
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Minnesota |
| Coordinates: | 46.0° North, 94.0° West (view map) | ||
| Paleocoordinates: | 7.1° South, 114.3° West (Wright 2013) | ||
| 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 - Maysvillian |
| Key time interval: | Edenian - Maysvillian | ||
| Age range of interval: | 451 - 449.6 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Lithology and environment
| Primary lithology: | "shale" |
| Secondary lithology: | "limestone" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Shale interbedded with limestone; sometimes dolomitic. | |
| 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: | 23191 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | T. Hanson | Research group: | marine invertebrate |
| Created: | 2002-07-10 10:42:43 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2002-07-10 10:42:43 |
| Creative Commons license: | CC0 |
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] |