Where: Minnesota (44.0° N, 92.0° W: paleocoordinates 19.1° S, 62.9° W)
• coordinate estimated from map
• basin-level geographic resolution
When: Stewartville Formation, Edenian (451.0 - 450.2 Ma)
• formation-level stratigraphic resolution
Environment/lithology: gray wackestone
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 23405: authorized by Steven Holland, entered by Tori Hanson on 14.07.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Edrioasteroidea | |
Edrioaster bigsbyi Billings 1858 | |
Astrocystites sp. Whiteaves 1897 | |
Cyclocystoidea | |
Cyclocystoides spp. Salter and Billings 1858
Actinodiscus sp. Smith and Paul 1982 | |
Crinoidea | |
Rhaphanocrinus sp. Wachsmuth and Springer 1885 crinoid | |
Cupulocrinus aff. conjugans Sea lily
Cupulocrinus sp. d'Orbigny 1849 Sea lily
Quienquecaudex springeri Kolata 1975 Sea lily | |
Porocrinus pentagonius Sea lily
Porocrinus sp. Billings 1857 Sea lily
Carabocrinus sp. Billings 1857 Sea lily
Carabocrinus radiatus Billings 1857 Sea lily | |
Cremacrinus aff. punctatus Sea lily | |
Ectenocrinus simplex Hall 1847 Sea lily | |
Merocrinus sp. Walcott 1884 Sea lily | |
Soluta | |
Tanaocystis sp. Sprinkle 1982 | |
Amecystis sp. Ulrich and Kirk 1921 | |
Asteroidea | |
Schuchertia sp. Gregory 1899 sea star | |
Promopalaeaster sp. Schuchert 1914 sea star | |
Hudsonaster sp. Stürtz 1899 sea star |