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, Eagle Point Member (Dunleith Formation), Shermanian (457.3 - 449.6 Ma)
• member-level stratigraphic resolution
Environment/lithology: dolomitic 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 23800: authorized by Steven Holland, entered by Tori Hanson on 21.07.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Lingulata | |
? Pseudolingula iowensis Owen 1844 | |
Craniata | |
Petrocrania trentonensis, Acanthocrania granulosa, "Acanthocrania setigeria" = Acanthocrania setigera
| |
Strophomenata | |
Sowerbyella minnesotensis Sardeson 1892 | |
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 | |
Rhynchonellata | |
| |
"Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847 | |
Skenidioides anthonense Sardeson 1894 | |
? Diorthelasma weissi Rice 1987 | |
Paucicrura rogata Sardeson 1892 | |
"Plaesiomys meedsi" = Dinorthis meedsi, Dinorthis pectinella
"Plaesiomys meedsi" = Dinorthis meedsi Winchell and Schuchert 1892
Dinorthis pectinella Emmons 1842 | |
Glyptorthis bellarugosa Conrad 1843 | |
Hesperorthis tricenaria Conrad 1843 | |
Platystrophia amoena McEwan 1919
Platystrophia trentonensis McEwan 1919 | |
Plectorthis plicatella Hall 1847 | |
Trilobita | |
Illaenus sp. Dalman 1827 trilobite
Bumastoides porrectus trilobite | |
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria Conrad 1841 trilobite | |
Sceptaspis lincolnensis Branson 1909 trilobite | |
"Encrinuroides vigilans" = Erratencrinurus vigilans
"Encrinuroides vigilans" = Erratencrinurus vigilans Hall 1847 trilobite | |
Ceraurus pleurexanthemus Green 1832 trilobite | |
Isotelus gigas Dekay 1824 trilobite |