Maquoketa Formation Cephalopods, Iowa: Edenian, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Apsidoceratidae
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Charactoceras sp.
Foerste 1924
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Cephalopoda
- Ascocerida
- Probillingsitidae
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Probillingsites sp.
Foerste 1928
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Cephalopoda
- Endocerida
- Endoceratidae
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Cyclendoceras sp.
Grabau and Shimer 1910
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Endoceras sp.
Hall 1847
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Cephalopoda
- Orthocerida
- Proteoceratidae
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Ephippiorthoceras sp.
Foerste 1924
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Cephalopoda
- Orthocerida
- Kionoceratidae
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Kionoceras sp.
Hyatt 1884
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Cephalopoda
- Pseudorthocerida
- Spyroceratidae
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Spyroceras sp.
Hyatt 1884
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Iowa |
| Coordinates: | 43.0° North, 92.0° West (view map) | ||
| Paleocoordinates: | 19.8° South, 63.7° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Late/Upper 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: | 451.10000 - 450.40000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Maquoketa |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | "limestone" |
| Secondary lithology: | "shale" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Shale interbedded with limestone; sometimes dolomitic. Lithology from F. M. Swain. 1987. Middle and Upper Ordovician Ostracoda of Minnesota and Iowa. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 :99-101. Edited by R. E. Sloan. | |
| Environment: | carbonate indet. |
| Geology comments: Environmental call by T. Hanson. | |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | species names |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 24170 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | T. Hanson | Research group: | marine invertebrate |
| Created: | 2002-08-01 12:56:17 | Last modified: | 2002-08-01 15:56:21 |
| Access level: | the public | Released: | 2002-08-01 12:56:17 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6817. | A. K. Miller, W. Youngquist, and C. Collinson. 1954. Ordovician cephalopod fauna of Baffin Island. Geological Society of America Memoir 62:1-234 [S. Holland/T. Hanson/T. Hanson] |