Dunleith Formation, Beecher Member Cephalopods, Illinois, Iowa, Wisconsin: Shermanian, Illinois, Iowa, Wisconsin
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Clinoceratidae
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Whitfieldoceras minimum
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Cephalopoda
- Ascocerida
- Probillingsitidae
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Probillingsites milleri
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Probillingsites welleri
Foerste 1928
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Cephalopoda
- Oncocerida
- Valcouroceratidae
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? Manitoulinoceras wykoffense
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Cephalopoda
- Cyrtocerinida
- Cyrtocerinidae
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Cyrtocerina schoolcrafti
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Cephalopoda
- Barrandeocerida
- Barrandeoceratidae
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Centrocyrtoceras rotundum
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Michelinoceras sp.
Foerste 1932
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Orthoceras beltrami
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| "Orthoceras" beltrami | ||||||||||
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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 | ||||||||||
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Cephalopoda
- Orthocerida
- Kionoceratidae
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Kionoceras decorahense
Flower 1952
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| 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: | Shermanian |
| Key time interval: | Shermanian | ||
| Age range of interval: | 457.00000 - 449.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
Lithology and environment
| Primary lithology: | "limestone" |
| Includes fossils? | Y |
| Lithology description: 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: | 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: | 23768 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2002-07-19 14:18:56 | Last modified: | 2004-10-22 12:05:20 |
| Access level: | the public | Released: | 2002-07-19 14:18:56 |
| 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] |