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: Wyota Member (Dunleith Formation), Shermanian (457.3 - 449.6 Ma)
• member-level stratigraphic resolution
Environment/lithology: cherty/siliceous limestone
Size class: macrofossils
Primary reference: D. R. Kolata, J. C. Brower, and T. J. Frest. 1987. Upper Mississippi Valley Champlainian and Cincinnatian echinoderms. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 179-181 [S. Holland/T. Hanson/T. Hanson]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 23486: authorized by Steven Holland, entered by Tori Hanson on 15.07.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
| |
Edrioasteroidea | |
Edrioaster bigsbyi Billings 1858 | |
Soluta | |
Tanaocystis sp. Sprinkle 1982 | |
Pleurocystites strimplei Brower 1999 | |
Glyptocystites sp. Billings 1854 | |
Paracrinoidea | |
Amygdalocystites sp. Billings 1854 | |
Crinoidea | |
Ptychocrinus sp. Wachsmuth and Springer 1885 Sea lily | |
Pycnocrinus sp. Miller 1883 Sea lily
Glyptocrinus sp. Hall 1847 Sea lily
Glyptocrinus aff. pustulosis Sea lily
Glyptocrinus aff. ornatus Billings 1857 Sea lily | |
Quienquecaudex springeri Kolata 1975 Sea lily
Cupulocrinus aff. conjugans Sea lily
Cupulocrinus aff. gracilis Sea lily | |
Hybocrinus conicus Billings 1857 Sea lily | |
Cremacrinus gerki Sea lily
Cremacrinus aff. punctatus Sea lily
Cremacrinus guttenbergensis Kolata 1975 Sea lily | |
Asteroidea | |
Hudsonaster sp. Stürtz 1899 sea star | |
Promopalaeaster sp. Schuchert 1914 sea star | |
Schuchertia sp. Gregory 1899 sea star | |
Cyclocystoidea | |
Cyclocystoides aff. halli Billings 1858 |