Platteville Formation Echinoderms, Upper Mississippi Valley (Minnesota) (Ordovician to of the United States)

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 (460.9 - 449.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: limestone

• Environmental call by T. Hanson.
• Limestone with shaly partings. Lithology from W. F. Rice and E. P. Hedblom. 1987. Brachiopods and trilobites of the Sardeson Beds in the Twin Cities. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 :131-135

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
  -
"Cincinnaticrinid" sp.
Cincinnaticrinid
"Camerate" sp.
Undescribed camerate
Crinoidea
 Camerata - Reteocrinidae
"Reteocrinus spinosus" = Reteocrinus, "Traskocrinus mahlburgi" = Reteocrinus
"Reteocrinus spinosus" = Reteocrinus Sea lily
"Traskocrinus mahlburgi" = Reteocrinus Sea lily
 Monobathrida - Glyptocrinidae
 Diplobathrida - Rhodocrinitidae
 Flexibilia - Cupulocrinidae
"? Dendrocrinus springeri" = Quienquecaudex springeri Kolata 1975 Sea lily
 Porocrinida -
Carabocrinus sp. Billings 1857 Sea lily
 Dendrocrinida - Dendrocrinidae
Dendrocrinus sp. Hall 1852 Sea lily
 Inadunata - Merocrinidae
 Homocrinida - Cincinnaticrinidae
 Calceocrinida - Calceocrinidae
 Rhombifera - Cheirocrinidae
Cheirocrinus sp. Eichwald 1856
 Rhombifera - Glyptocystitidae
Glyptocystites sp. Billings 1854
 Rhombifera - Pleurocystitidae
Echinoidea
 Bothriocidaroida -
 Bothriocidaroida - Bothriocidaridae
Holothuroidea
 Dendrochirotida - Calclamnidae
Thuroholia cribriformis Gutschick 1954 sea cucumber
Thuroholia croneisi Gutschick 1954 sea cucumber
Asteroidea
 Hadrosida - Urasterellidae
Urasterella sp., "Urasterella ulrichi" = Ulrichaster ulrichi
Urasterella sp. McCoy 1851 sea star
"Urasterella ulrichi" = Ulrichaster ulrichi Schuchert 1915 sea star
 Hadrosida - Hudsonasteridae
Hudsonaster narrawayi Hudson 1912 sea star
Hudsonaster aff. rugosus Billings 1857 sea star
Cyclocystoidea
  - Cyclocystoididae
Cyclocystoides sp. Salter and Billings 1858