Dunleith Formation, Sherwood Member Cephalopods, Illinois, Iowa, Wisconsin: Shermanian, Illinois, Iowa, Wisconsin
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda
- Endocerida
- Endoceratidae
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Cameroceras hennepini
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Cephalopoda
- Orthocerida
- Dawsonoceratidae
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? Metaspyroceras wisconsinense
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras beltrami
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"Orthoceras" beltrami | ||||||||||
Michelinoceras multicameratum
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Michelinoceras sp.
Foerste 1932
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Cephalopoda
- Orthocerida
- Kionoceratidae
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Polygrammoceras prestonense
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Kionoceras decorahense
Flower 1952
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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
- Tripteroceratidae
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Tripteroceras planoconvexum
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Cephalopoda
- Barrandeocerida
- Barrandeoceratidae
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Centrocyrtoceras rotundum
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Cephalopoda
- Oncocerida
- Valcouroceratidae
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? Manitoulinoceras wykoffense
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Cephalopoda
- Oncocerida
- Diestoceratidae
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Diestoceras clarkei
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Cephalopoda
- Oncocerida
- Oncoceratidae
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Oncoceras douglassi
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Cephalopoda
- Discosorida
- Westonoceratidae
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Teichertoceras cf. husseyi
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Westonoceras minnesotense
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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
- Clinoceratidae
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Whitfieldoceras minimum
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Whitfieldoceras cf. exiguum
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Cephalopoda
- Cyrtocerinida
- Cyrtocerinidae
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Cyrtocerina schoolcrafti
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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 | ||
*Period: | Middle Ordovician - Late/Upper Ordovician | *Local age/stage: | Shermanian |
Key time interval: | Shermanian | ||
Age range of interval: | 460.90000 - 449.50000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Lithology and environment
Primary lithology: | calcareous "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: | 23775 | ||
Authorizer: | S. Holland | Enterer: | T. Hanson |
Modifier: | S. Holland | Research group: | marine invertebrate |
Created: | 2002-07-19 15:38:25 | Last modified: | 2004-10-22 12:56:18 |
Access level: | the public | Released: | 2002-07-19 15:38:25 |
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] |