Dunleith Formation, Wyota Member Echinoderms, Upper Mississippi Valley (Ordovician of the United States)

Where: Illinois, Iowa (42.0° N, 90.5° W)

• Paleocoordinates: 11.7° S, 115.3° W (Wright 2013)

• 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

• Environmental call by T. Hanson.
• Lithology from C. O. Leverson, A. J. Gerk, R. E. Sloan, & L. A. Bisagno. General section of the Middle and Late Ordovician strata of Northeastern Iowa, Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35, p.25-39. Edited by R. E. Sloan.

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: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
"Cincinnaticrinid" sp.
"Cincinnaticrinid" sp.
undescribed cincinnaticrinid
Crinoidea
 Monobathrida - Glyptocrinidae
Glyptocrinus sp., Glyptocrinus aff. pustulosis, Pycnocrinus sp., "Glyptocrinus aff. ornatus" = Abludoglyptocrinus ornatus
Glyptocrinus sp. Hall 1847 Sea lily
Pycnocrinus sp. Miller 1883 Sea lily
"Glyptocrinus aff. ornatus" = Abludoglyptocrinus ornatus Billings 1857 Sea lily
 Diplobathrida - Dimerocrinitidae
Ptychocrinus sp.
Ptychocrinus sp. Wachsmuth and Springer 1885 Sea lily
 Calceocrinida - Calceocrinidae
Cremacrinus gerki, Cremacrinus aff. punctatus, Cremacrinus guttenbergensis
Cremacrinus guttenbergensis Kolata 1975 Sea lily
 Hybocrinida - Hybocrinidae
Hybocrinus conicus
Hybocrinus conicus Billings 1857 Sea lily
 Flexibilia - Cupulocrinidae
Quienquecaudex springeri, Cupulocrinus aff. conjugans, Cupulocrinus aff. gracilis
Quienquecaudex springeri Kolata 1975 Sea lily
Paracrinoidea
 Comarocystitida - Amygdalocystitidae
Amygdalocystites sp.
Amygdalocystites sp. Billings 1854
 Rhombifera - Glyptocystidae
Tanaocystis sp.
Tanaocystis sp. Sprinkle 1982
 Rhombifera - Glyptocystitidae
Glyptocystites sp.
Glyptocystites sp. Billings 1854
 Rhombifera - Pleurocystitidae
Pleurocystites strimplei
Soluta
 Syringocrinida - Iowacystidae
Scalenocystites strimplei, Myeinocystites crossmani
Myeinocystites crossmani Kolata et al. 1977
Cyclocystoidea
  - Cyclocystoididae
Cyclocystoides aff. halli
Asteroidea
 Euaxosida - Palasterinidae
Schuchertia sp.
Schuchertia sp. Gregory 1899 sea star
 Hadrosida - Hudsonasteridae
Hudsonaster sp.
Hudsonaster sp. Stürtz 1899 sea star
 Hadrosida - Promopalaeasteridae
Promopalaeaster sp.
Promopalaeaster sp. Schuchert 1914 sea star
Edrioasteroidea
 Edrioasterida - Edrioasteridae
Edrioaster bigsbyi
Edrioaster bigsbyi Billings 1858