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: Belodina confluens conodont zone, Fairplay Member (Dunleith Formation), Shermanian (457.3 - 449.6 Ma)
• member-level stratigraphic resolution
Environment/lithology: shale and limestone
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 23801: authorized by Steven Holland, entered by Tori Hanson on 21.07.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Craniata | |
Petrocrania trentonensis, Acanthocrania granulosa, "Acanthocrania setigeria" = Acanthocrania setigera
| |
Rhynchonellata | |
Skenidioides anthonense Sardeson 1894 | |
Plectorthis plicatella Hall 1847 | |
Platystrophia amoena McEwan 1919
Platystrophia trentonensis McEwan 1919 | |
Dinorthis pectinella, "Plaesiomys meedsi" = Dinorthis meedsi
Dinorthis pectinella Emmons 1842
"Plaesiomys meedsi" = Dinorthis meedsi Winchell and Schuchert 1892 | |
Hesperorthis tricenaria Conrad 1843 | |
Glyptorthis bellarugosa Conrad 1843 | |
? Diorthelasma weissi Rice 1987 | |
Paucicrura rogata Sardeson 1892 | |
"Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847 | |
Strophomenata | |
Furcitella scofieldi Winchell and Schuchert 1892 | |
"Holtedahlina emaciata" = Pionomena emaciata
"Holtedahlina emaciata" = Pionomena emaciata Winchell and Schuchert 1892 | |
Strophomena billingsi Winchell and Schuchert 1893 | |
Rafinesquina trentonensis Hall 1847 | |
Sowerbyella minnesotensis Sardeson 1892 | |
Lingulata | |
Pseudolingula iowensis Owen 1844 | |
Trilobita | |
Sceptaspis lincolnensis Branson 1909 trilobite | |
"Encrinuroides vigilans" = Erratencrinurus vigilans
"Encrinuroides vigilans" = Erratencrinurus vigilans Hall 1847 trilobite | |
Ceraurus pleurexanthemus Green 1832 trilobite | |
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria Conrad 1841 trilobite | |
Bumastoides porrectus trilobite
Illaenus sp. Dalman 1827 trilobite | |
Isotelus gigas Dekay 1824 trilobite |