Where: Minnesota (44.0° N, 92.0° W: paleocoordinates 19.1° S, 62.9° W)
• coordinate estimated from map
• basin-level geographic resolution
When: Platteville Formation, Blackriveran to Blackriveran (457.3 - 449.6 Ma)
• formation-level stratigraphic resolution
Environment/lithology: 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 23400: authorized by Steven Holland, entered by Tori Hanson on 13.07.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Asteroidea | |
"Urasterella ulrichi" = Ulrichaster ulrichi, Urasterella sp.
"Urasterella ulrichi" = Ulrichaster ulrichi Schuchert 1915 sea star
Urasterella sp. McCoy 1851 sea star | |
Hudsonaster narrawayi Hudson 1912 sea star
Hudsonaster aff. rugosus Billings 1857 sea star | |
Echinoidea | |
Neobothriocidaris sp. sea urchin | |
Bothriocidaris solemi sea urchin | |
Holothuroidea | |
Thuroholia cribriformis Gutschick 1954 sea cucumber
Thuroholia croneisi Gutschick 1954 sea cucumber | |
Cheirocrinus sp. Eichwald 1856
Coronocystis durandensis Kolata 1975 | |
Praepleurocystis sp. Paul 1967 | |
Glyptocystites sp. Billings 1854 | |
Crinoidea | |
Glyptocrinus pustulosis Sea lily
Abludoglyptocrinus charltoni Sea lily | |
Rhaphanocrinus buckleyi crinoid | |
"Reteocrinus spinosus" = Reteocrinus, "Traskocrinus mahlburgi" = Reteocrinus
"Reteocrinus spinosus" = Reteocrinus Sea lily
"Traskocrinus mahlburgi" = Reteocrinus Sea lily | |
Cupulocrinus conjugans, Cupulocrinus gracilis, Cupulocrinus jewetti, Cupulocrinus plattevillensis, "? Dendrocrinus springeri" = Quienquecaudex springeri
Cupulocrinus conjugans Sea lily
Cupulocrinus gracilis Sea lily
Cupulocrinus jewetti Sea lily
Cupulocrinus plattevillensis Sea lily
"? Dendrocrinus springeri" = Quienquecaudex springeri Kolata 1975 Sea lily | |
Porocrinus pentagonius Sea lily
Porocrinus aff. smithi Sea lily
Carabocrinus sp. Billings 1857 Sea lily | |
Dendrocrinus sp. Hall 1852 Sea lily | |
Cremacrinus arctus Sea lily
Anulocrinus forrestonensis Sea lily | |
Isotomocrinus minutus Sea lily | |
Merocrinus britonensis Sea lily | |
Cyclocystoidea | |
Cyclocystoides sp. Salter and Billings 1858
Cyclocystoides aff. halli Billings 1858 |