Sardeson Collection, Quimbys Mill Formation, Illinois and Iowa (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: Quimbys Mill Formation, Blackriveran (457.3 - 449.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: limestone

• Environmental call by T. Hanson.
• "12 to 14 feet thick . . . medium to thin beds of limestone and dolomite separated by thin shale laminae." Lithology from  O. L. Karklins. 1987. Bryozoa from Rocklandian (Middle Ordovician) rocks of the Upper Mississippi Valley region. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 :173-176, R.E. Sloan, ed.

Size class: macrofossils

Primary reference: J. A. Catalani. 1987. Biostratigraphy of the Middle and Late Ordovician cephalopods of the Upper Mississippi Valley area. In R. E. Sloan (ed.), Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 187-189 [S. Holland/T. Hanson/S. Bruning]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 23794: authorized by Steven Holland, entered by Tori Hanson on 21.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Pachyglossela elderi, Basilella barrandi
Trilobita
 Corynexochida - Illaenidae
Illaenus sp., Bumastoides milleri, Thaleops ovata
Illaenus sp. Dalman 1827 trilobite
Bumastoides milleri Billings 1859 trilobite
Thaleops ovata Conrad 1843 trilobite
 Asaphida - Asaphidae
Isotelus simplex
Isotelus simplex Raymond and Narraway 1910 trilobite
 Lichida - Lichidae
Amphilichas sp.
Amphilichas sp. Raymond 1905 trilobite
 Phacopida - Cheiruridae
Ceraurinella scofieldi, Gabriceraurus mifflinensis
Ceraurinella scofieldi Clarke 1897 trilobite
 Proetida - Bathyuridae
"Raymondites longispinus" = Bathyurus (Raymondites) longispinus
"Raymondites longispinus" = Bathyurus (Raymondites) longispinus Walcott 1876 trilobite
Craniata
 Craniida - Craniidae
Acanthocrania granulosa, "Acanthocrania setigeria" = Acanthocrania setigera, Petrocrania trentonensis
"Acanthocrania setigeria" = Acanthocrania setigera Hall 1866
[entered as Acanthocrania setigera]
Strophomenata
 Strophomenida - Strophomenidae
Strophomena cf. plattinensis
 Strophomenida - Furcitellidae
Trigrammaria winchelli, Oepikina minnesotensis
Trigrammaria winchelli Hall and Clarke 1892
Oepikina minnesotensis Winchell 1881
Rhynchonellata
 Orthida - Draboviidae
Pionodema conradi
 Orthida - Glyptorthidae
Glyptorthis bellarugosa
 Orthida - Plaesiomyidae
Campylorthis deflecta
 Orthida - Hesperorthidae
Hesperorthis tricenaria
 Orthida - Plectorthidae
Doleroides pervetus
 Rhynchonellida - Trigonirhynchiidae
Rostricellula minnesotensis
 Atrypida - Protozygidae
"Protozyga nicolleti" = Manespira nicolleti
"Protozyga nicolleti" = Manespira nicolleti Winchell and Schuchert 1892
Lingulata
 Lingulida - Pseudolingulidae
? Pseudolingula iowensis, Pseudolingula eva
Pseudolingula eva Billings 1861
 Lingulida - Discinidae
Orbiculoidea cf. lamellosa
 Lingulida - Trematidae
Trematis huronensis
Trematis huronensis Billings 1865
 Siphonotretida - Siphonotretidae
Schizambon sp.
Schizambon sp. Walcott 1884