Pecatonica Formation Cephalopods, Illinois, Iowa, Wisconsin: Blackriveran, Illinois, Iowa, Wisconsin

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Barrandeocerida - Barrandeoceratidae
? Antiplectoceras sp. Foerste and Savage 1927
Centrocyrtoceras annulatum
Centrocyrtoceras duplicostatum
Cephalopoda - Oncocerida - Valcouroceratidae
? Fayettoceras beloitense
Staufferoceras featherstonhaughi
Cephalopoda - Oncocerida - Oncoceratidae
Beloitoceras janesvillense
Beloitoceras pandion (Hall 1861)
Kentlandoceras husseyi
Zittelloceras percurvatum
? Zittelloceras brevicurvatum
? Zittelloceras tenuistriatum
Cephalopoda - Oncocerida - Diestoceratidae
Diestoceras alceum
Cephalopoda - Cyrtocerinida - Cyrtocerinidae
Cyrtocerina sp. Billings 1865
Cyrtocerina crenulata Flower 1952
Cephalopoda - Discosorida - Westonoceratidae
Reedsoceras macrostomum
Cephalopoda - Dissidocerida - Geisonoceratidae
Geisonoceras scofieldi
Cephalopoda - Orthocerida - Dawsonoceratidae
? Metaspyroceras nicolleti
Cephalopoda - Orthocerida - Tripteroceratidae
Tripteroceras scofieldi
Cephalopoda - Orthocerida - Proteoceratidae
Gorbyoceras sp. Shimizu and Obata 1935
Cephalopoda - Orthocerida - Orthoceratidae
Michelinoceras sp. Foerste 1932
Cephalopoda - Actinocerida - Ormoceratidae
Deiroceras scofieldi
Cephalopoda - Actinocerida - Actinoceratidae
Actinoceras bigsbyi
Actinoceras beloitense
Actinoceras gravicentrum
Cephalopoda - Actinocerida - Gonioceratidae
Gonioceras occidentale
Cephalopoda - Endocerida - Endoceratidae
Endoceras proteiforme Hall 1847
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:Blackriveran
Key time interval:Blackriveran
Age range of interval:457.00000 - 449.80000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Pecatonica
Stratigraphic resolution:formation
Lithology and environment
Primary lithology: "limestone"
Includes fossils?Y
Environment:carbonate indet.
Geology comments: Lithology and environment taken from Kolata, D. R. "Lithostratigraphy of the Plateville, Galena and Maquoketa Groups in Northern Illinois." Middle and Late Ordovician Lithostratigraphy and Biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35, p. 21-24. R. E. Sloan, ed.
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:23752
Authorizer:S. Holland Enterer:T. Hanson
Modifier:S. Holland Research group:marine invertebrate
Created:2002-07-19 11:28:42 Last modified:2004-10-22 11:30:24
Access level:the public Released:2002-07-19 11:28:42
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]