Where: Illinois, Iowa (42.0° N, 90.5° W: paleocoordinates 21.3° S, 63.6° 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
Size class: macrofossils
Collection methods: "[B]ased on a review of the Sardeson Collection at the University of Minnesota, Weiss (1953), Ulrich and Scofield (1895), the unpublished work of Levorson and Gerk, and the list in Stauffer and Thiel (1941)."
Primary reference: R. E. Sloan and G. F. Webers. 1987. Stratigraphic ranges of Middle and Late Ordovician Gastropoda and Monoplacophora of Minnesota. In R. E. Sloan (ed.), Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 183-186 [S. Holland/T. Hanson/S. Bruning]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 23617: authorized by Steven Holland, entered by Tori Hanson on 17.07.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
Tergomya | |
| |
Scenella spp. n. sp., Scenella compressa
| |
"Triblydium excertum" = Tryblidium exserta
| |
Gastropoda | |
"Ecculiomphalus undulatus" = Lytospira undulatus
"Ecculiomphalus undulatus" = Lytospira undulatus Hall 1861 snail | |
Raphistoma sp. Hall 1847 snail | |
Maclurites nitidus Ulrich and Scofield 1897 snail
Maclurites depressus Ulrich and Scofield 1897 snail
"Maclurites bigsbyi" = Maclurina bigsbyi Hall 1861 snail | |
Holopea rotunda Ulrich and Scofield 1897 snail
Holopea concinnula Ulrich and Scofield 1897 snail
Holopea insignis Ulrich and Scofield 1897 snail
Holopea ampla Ulrich and Scofield 1897 snail | |
"Ecculiomphalus beloitensis" = Lesueurilla beloitensis
"Ecculiomphalus beloitensis" = Lesueurilla beloitensis Ulrich and Scofield 1897 snail | |
Ophiletina sublaxa Ulrich and Scofield 1897 snail
Helicotoma planulata Salter 1859 snail | |
Tetranota sexcarinata Ulrich and Scofield 1897 snail
Tetranota obsoleta Ulrich and Scofield 1897 snail
Tetranota wisconsinensis Whitfield 1878 snail
Tetranota macra Ulrich and Scofield 1897 snail | |
"Tropidodiscus subacutus" = Alaskadiscus subacutus
"Tropidodiscus subacutus" = Alaskadiscus subacutus Ulrich and Scofield 1897 snail | |
Phragmolites triangularis, "Phragmolites fimbriatus" = Phragmolites fimbriata, Bucania halli, Bucania sublata, "Bucania minnesotensis" = Loxobucania minnesotensis, "Bucania emmonsi" = Loxobucania emmonsi, Salpingostoma buelli
Phragmolites triangularis Ulrich and Scofield 1897 snail
"Phragmolites fimbriatus" = Phragmolites fimbriata Ulrich and Scofield 1897 snail
Bucania halli Ulrich and Scofield 1897 snail
Bucania sublata Ulrich and Scofield 1897 snail
"Bucania minnesotensis" = Loxobucania minnesotensis Ulrich and Scofield 1897 snail
"Bucania emmonsi" = Loxobucania emmonsi Ulrich and Scofield 1897 snail
Salpingostoma buelli Whitfield 1878 snail | |
Pterotheca attenuata Hall 1861 snail | |
Sinuites rectangularis Ulrich and Scofield 1897 snail | |
Fusispira spicula Sardeson 1892 snail | |
Eunema centralis, "Lophospira helicteres" = Eunema helicteres, Lophospira perangulata, Lophospira serrulata, Lophospira decursa, "Lophospira conradana" = Lophospira ventricosa
Eunema centralis Ulrich and Scofield 1897 snail
"Lophospira helicteres" = Eunema helicteres Salter 1859 snail
Lophospira perangulata Hall 1847 snail
Lophospira serrulata Salter 1859 snail
Lophospira decursa Ulrich and Scofield 1897 snail
"Lophospira conradana" = Lophospira ventricosa Hall 1847 snail | |
Clathrospira conica, Clathrospira subconica, "Eotomaria supracingulata" = Paraliospira supracingulata
Clathrospira conica Ulrich and Scofield 1897 snail
Clathrospira subconica Hall 1847 snail
"Eotomaria supracingulata" = Paraliospira supracingulata Billings 1857 snail | |
Hormotoma subangulata Ulrich and Scofield 1897 snail
Hormotoma gracilis Hall 1847 snail | |
Bivalvia | |
Ctenodonta sp. Salter 1852 clam | |
Deceptrix sp. Fuchs 1919 clam | |
Sphenolium sp. Miller 1889 clam | |
"Endodesma sp." = Cymatonota, Whiteavesia sp.
"Endodesma sp." = Cymatonota Ulrich 1893 clam
Whiteavesia sp. Ulrich 1893 clam | |
Eurymya plana clam | |
Ambonychiopsis sp. Isberg 1934 clam
Cleionychia sp. Ulrich 1892 clam | |
Cyrtodonta sp. Billings 1858 clam
Cyrtodontula sp. Tomlin 1931 clam
Vanuxemia sp. Billings 1858 clam |