PBDB Collection

Grand Detour Formation Cephalopods, Illinois, Iowa, Wisconsin (Ordovician of the United States)

Where: Illinois, Iowa, Wisconsin (43.0° N, 91.0° W: paleocoordinates 20.4° S, 63.1° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Grand Detour Formation, Blackriveran (457.3 - 449.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: limestone

• 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.

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 23756: authorized by Steven Holland, entered by Tori Hanson on 19.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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

Show authors, comments, and common names

unclassified
-	Bodeiceras oxygonum, Onoceras abruptum, Onoceras tetreauvillense Bodeiceras oxygonum Onoceras abruptum Onoceras tetreauvillense
Cephalopoda
Orthocerida - Dawsonoceratidae	Metaspyroceras minneapolis, ? Metaspyroceras wisconsinense Metaspyroceras minneapolis ? Metaspyroceras wisconsinense
Orthocerida - Proteoceratidae	Gorbyoceras sp., "Orthoceras junceum" = Isorthoceras junceum Gorbyoceras sp. Shimizu and Obata 1935 "Orthoceras junceum" = Isorthoceras junceum Hall 1877 "Orthoceras" junceum
Orthocerida - Tripteroceratidae	Tripteroceras cf. oweni, Tripteroceras scofieldi, Allumettoceras planodorsatum, Allumettoceras cf. carletonense Tripteroceras cf. oweni Tripteroceras scofieldi Allumettoceras planodorsatum Allumettoceras cf. carletonense Allumettoceras cf. planodorsatum carletonense
Orthocerida - Orthoceratidae	Michelinoceras multicameratum, Michelinoceras sp. Michelinoceras multicameratum Michelinoceras sp. Foerste 1932
Actinocerida - Actinoceratidae	Actinoceras bigsbyi, Actinoceras beloitense, Actinoceras janesvillensis Actinoceras bigsbyi Actinoceras beloitense Actinoceras janesvillensis [entered as Actinoceras janesvillense]
Actinocerida - Ormoceratidae	Deiroceras scofieldi Deiroceras scofieldi
Actinocerida - Gonioceratidae	Gonioceras occidentale, Gonioceras homerense, Gonioceras anceps Gonioceras occidentale Gonioceras homerense Gonioceras occidentale homerense Gonioceras anceps Hall 1847
Multiceratoidea - Apsidoceratidae	Chidleyenoceras sp. Chidleyenoceras sp. Shimizu and Obata 1935
Multiceratoidea - Clinoceratidae	Whitfieldoceras mumiaforme Whitfieldoceras mumiaforme
Oncocerida - Diestoceratidae	Diestoceras alceum, Diestoceras sp. Diestoceras alceum Diestoceras sp. Foerste 1924
Oncocerida - Valcouroceratidae	Manitoulinoceras neleum, Valcouroceras sp. Manitoulinoceras neleum Valcouroceras sp. Flower 1943
Oncocerida - Oncoceratidae	Richardsonoceras simplex, Richardsonoceras beloitense, Richardsonoceras romingeri, ? Richardsonoceras clarkei, ? Richardsonoceras scofieldi, Zittelloceras beloitense, Zittelloceras clarkeanum, Zittelloceras scofieldi, Zittelloceras percurvatum, ? Zittelloceras brevicurvatum, ? Zittelloceras tenuistriatum, Loganoceras sp., Beloitoceras lycum, Beloitoceras janesvillense, Beloitoceras carveri, Beloitoceras norwoodi, Beloitoceras houghtoni, Beloitoceras plebeium, Beloitoceras pandion, Beloitoceras cf. huronense, Scofieldoceras shumardi, Cyrtorizoceras minneapolis Richardsonoceras simplex Richardsonoceras beloitense Richardsonoceras romingeri ? Richardsonoceras clarkei ? Richardsonoceras scofieldi Zittelloceras beloitense Zittelloceras clarkeanum Zittelloceras scofieldi Zittelloceras percurvatum ? Zittelloceras brevicurvatum ? Zittelloceras tenuistriatum Loganoceras sp. Foerste 1932 Beloitoceras lycum Beloitoceras janesvillense Beloitoceras carveri Beloitoceras norwoodi Beloitoceras houghtoni Beloitoceras plebeium Hall 1861 Beloitoceras pandion Hall 1861 Beloitoceras cf. huronense Billings 1865 Scofieldoceras shumardi Cyrtorizoceras minneapolis Clarke 1897
Discosorida - Cyrtogomphoceratidae	Ulrichoceras beloitense Ulrichoceras beloitense
Discosorida - Westonoceratidae	Reedsoceras macrostomum Reedsoceras macrostomum
Cyrtocerinida - Cyrtocerinidae	Cyrtocerina crenulata Cyrtocerina crenulata Flower 1952
Ascocerida - Probillingsitidae	? Redpathoceras sp. ? Redpathoceras sp. Flower 1963
Ascocerida - Hebetoceratidae	? Hebetoceras sp. ? Hebetoceras sp. Flower 1941
Barrandeocerida - Plectoceratidae	Plectoceras robertsoni, Plectoceras occidentale Plectoceras robertsoni Plectoceras occidentale
Barrandeocerida - Barrandeoceratidae	? Antiplectoceras sp., Centrocyrtoceras duplicostatum ? Antiplectoceras sp. Foerste and Savage 1927 Centrocyrtoceras duplicostatum
Pseudorthocerida - Spyroceratidae	Spyroceras scofieldi Spyroceras scofieldi "Spyroceras" scofieldi
Endocerida - Endoceratidae	Endoceras sp., Endoceras proteiforme, "Endoceras cf. annulatum" = Cyclendoceras annulatum, Cameroceras cf. alternatum, Cameroceras sp. Endoceras sp. Hall 1847 Endoceras proteiforme Hall 1847 "Endoceras cf. annulatum" = Cyclendoceras annulatum Hall 1847 Cameroceras cf. alternatum Cameroceras sp. Conrad 1842