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

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: Wall Member (Dunleith Formation), Shermanian (457.3 - 449.6 Ma)

• member-level stratigraphic resolution

Environment/lithology: argillaceous 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 23481: authorized by Steven Holland, entered by Tori Hanson on 15.07.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
"Archaeocrinid" sp., "Cincinnaticrinid" sp.
"Archaeocrinid" sp.
undescribed archaeocrinid
"Cincinnaticrinid" sp.
undescribed cincinnaticrinid
Soluta
 Syringocrinida - Iowacystidae
Scalenocystites strimplei, Myeinocystites crossmani
Crinoidea
 Diplobathrida - Rhodocrinitidae
aff. Trichinocrinus spp., Rhaphanocrinus aff. buckleyi
aff. Trichinocrinus spp. Moore and Laudon 1943 Sea lily
New genus aff. Trichinocrinus spp.
 Diplobathrida - Dimerocrinitidae
Ptychocrinus sp.
Ptychocrinus sp. Wachsmuth and Springer 1885 Sea lily
 Monobathrida - Glyptocrinidae
Abludoglyptocrinus charltoni, Abludoglyptocrinus aff. charltoni, Abludoglyptocrinus spp., Pycnocrinus sp., Glyptocrinus sp., Glyptocrinus aff. pustulosis, Glyptocrinus aff. ornatus
Abludoglyptocrinus spp. Kolata 1982 Sea lily
Pycnocrinus sp. Miller 1883 Sea lily
Glyptocrinus sp. Hall 1847 Sea lily
Glyptocrinus aff. ornatus Billings 1857 Sea lily
 Calceocrinida - Calceocrinidae
Cremacrinus aff. arctus, Cremacrinus crossmani, Cremacrinus gerki, Cremacrinus guttenbergensis, Calceocrinus gossmani
Cremacrinus guttenbergensis Kolata 1975 Sea lily
 Homocrinida - Homocrinidae
Ectenocrinus simplex
Ectenocrinus simplex Hall 1847 Sea lily
 Flexibilia - Cupulocrinidae
Quienquecaudex springeri, Cupulocrinus aff. conjugans, Cupulocrinus aff. gracilis
Quienquecaudex springeri Kolata 1975 Sea lily
 Dendrocrinida - Dendrocrinidae
Dendrocrinus aff. acutidactylus
Dendrocrinus aff. acutidactylus Billings 1859 Sea lily
 Porocrinida -
Carabocrinus spp., Carabocrinus radiatus
Carabocrinus spp. Billings 1857 Sea lily
Carabocrinus radiatus Billings 1857 Sea lily
 Hybocrinida - Hybocrinidae
Hybocrinus conicus
Hybocrinus conicus Billings 1857 Sea lily
Paracrinoidea
 Comarocystitida - Amygdalocystitidae
Amygdalocystites sp.
Amygdalocystites sp. Billings 1854
 Rhombifera - Glyptocystitidae
Glyptocystites sp.
Glyptocystites sp. Billings 1854
 Rhombifera - Pleurocystitidae
Pleurocystites strimplei
 Rhombifera - Glyptocystidae
Tanaocystis sp.
Tanaocystis sp. Sprinkle 1982
Cyclocystoidea
  - Cyclocystoididae
Cyclocystoides aff. halli
Asteroidea
 Hadrosida - Hudsonasteridae
Hudsonaster aff. rugosus
Hudsonaster aff. rugosus Billings 1857 sea star
 Hadrosida - Promopalaeasteridae
Promopalaeaster sp.
Promopalaeaster sp. Schuchert 1914 sea star
 Euaxosida - Palasterinidae
Schuchertia sp.
Schuchertia sp. Gregory 1899 sea star
Edrioasteroidea
 Edrioasterida - Edrioasteridae
Edrioaster bigsbyi
Edrioaster bigsbyi Billings 1858