Wise Lake Formation, Rifle Hill Formation Echinoderms, Upper Mississippi Valle (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: Rifle Hill Member (Wise Lake Formation), Edenian (451.0 - 450.2 Ma)

• Rifle Hill Member = "Stewartville" Member

• member-level stratigraphic resolution

Environment/lithology: dolomite

• Environmental call by T. Hanson.
• Dolomite or dolomitic mottled limestone. 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 23492: authorized by Steven Holland, entered by Tori Hanson on 15.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Sivertsia sp.
 Glyptosphaeritida - Eumorphocystidae
Eumorphocystis sp.
Crinoidea
 Diplobathrida - Rhodocrinitidae
Rhaphanocrinus sp.
Rhaphanocrinus sp. Wachsmuth and Springer 1885 crinoid
 Calceocrinida - Calceocrinidae
Cremacrinus aff. punctatus
 Homocrinida - Homocrinidae
Ectenocrinus simplex
Ectenocrinus simplex Hall 1847 Sea lily
 Flexibilia - Cupulocrinidae
Quienquecaudex springeri, Cupulocrinus aff. conjugans, Cupulocrinus sp.
Quienquecaudex springeri Kolata 1975 Sea lily
Cupulocrinus sp. d'Orbigny 1849 Sea lily
 Porocrinida -
Carabocrinus sp., Carabocrinus radiatus, Porocrinus pentagonius, Porocrinus sp.
Carabocrinus sp. Billings 1857 Sea lily
Carabocrinus radiatus Billings 1857 Sea lily
Porocrinus sp. Billings 1857 Sea lily
 Inadunata - Merocrinidae
Merocrinus sp.
Merocrinus sp. Walcott 1884 Sea lily
 Rhombifera - Pleurocystitidae
Amecystis sp.
Amecystis sp. Ulrich and Kirk 1921
 Rhombifera - Glyptocystidae
Tanaocystis sp.
Tanaocystis sp. Sprinkle 1982
Cyclocystoidea
  - Cyclocystoididae
Cyclocystoides spp., Actinodiscus sp.
Cyclocystoides spp. Salter and Billings 1858
Actinodiscus sp. Smith and Paul 1982
Edrioasteroidea
 Pentacystida - Steganoblastidae
Astrocystites sp.
Astrocystites sp. Whiteaves 1897