Ion Formation, Buckhorn Member Cephalopods, Illinois, Iowa, Wisconsin: Kirkfieldian, Illinois, Iowa, Wisconsin
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda
- Oncocerida
- Valcouroceratidae
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? Manitoulinoceras warsawense
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? Manitoulinoceras wykoffense
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Cephalopoda
- Oncocerida
- Oncoceratidae
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? Scofieldoceras depressum
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Cephalopoda
- Endocerida
- Endoceratidae
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Nanno aulema
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Endoceras decorahense
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Cephalopoda
- Actinocerida
- Gonioceratidae
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Gonioceras kayi
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Cephalopoda
- Orthocerida
- Dawsonoceratidae
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Anaspyroceras anellus
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Metaspyroceras perlineatum
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Metaspyroceras clarkei
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Cephalopoda
- Orthocerida
- Proteoceratidae
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Orthoceras junceum
Hall 1847
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recombined as Isorthoceras junceum | ||||||||||
"Orthoceras" junceum | ||||||||||
Cephalopoda
- Orthocerida
- Orthoceratidae
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Michelinoceras multicameratum
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Michelinoceras sp.
Foerste 1932
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Orthoceras beltrami
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"Orthoceras" beltrami | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Illinois, Iowa, Wisconsin |
Coordinates: | 43.0° North, 91.0° West (view map) | ||
Paleocoordinates: | 20.4° South, 63.1° West | ||
Basis of coordinate: | estimated from map | ||
Geographic resolution: | basin |
Time
Period: | Ordovician | Epoch: | Late/Upper Ordovician |
10 m.y. bin: | Ordovician 4-5 | ||
*Period: | Middle Ordovician - Late/Upper Ordovician | *Local age/stage: | Kirkfieldian |
Key time interval: | Kirkfieldian | ||
Age range of interval: | 457.00000 - 449.80000 m.y. ago | ||
* legacy (obsolete) database fields |
Lithology and environment
Primary lithology: | "limestone" |
Includes fossils? | Y |
Lithology description: 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 methods: | field collection |
Reason for describing collection: | biostratigraphic analysis |
Taxonomic list comments:Faunal list compiled from: 1. Whitfield's (1882) report in volume 4 of Chamberlin's Geology of Wisconsin 2. Clarke's (1897) report in volume III part 2 of Winchell's Final Reports of the Minnesota Geological and Natural History Survey 3. Bassler's Index 4. Individual articles (Foerste, Flower, etc.) 5. Treatise, Part K 6. Author's personal field data. |
Metadata
Database number: | 23766 | ||
Authorizer: | S. Holland | Enterer: | T. Hanson |
Modifier: | S. Holland | Research group: | marine invertebrate |
Created: | 2002-07-19 14:02:17 | Last modified: | 2004-10-22 12:04:46 |
Access level: | the public | Released: | 2002-07-19 14:02:17 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
6752. | J. A. Catalani. 1987. Biostratigraphy of the Middle and Late Ordovician cephalopods of the Upper Mississippi Valley area. In R. E. Sloan (ed.), Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 187-189 [S. Holland/T. Hanson/S. Bruning] |