Sardeson Collection, Ion Formation, Buckhorn Member, 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: Buckhorn Member (Ion Formation), Kirkfieldian (460.9 - 449.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: limestone

• Environmental call by T. Hanson.
• Lithology from F. M. Swain. 1987. Middle and Upper Ordovician Ostracoda of Minnesota and Iowa. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 : 99-101. Edited by R. E. Sloan.

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 23797: authorized by Steven Holland, entered by Tori Hanson on 21.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Strophomenata
 Strophomenida - Sowerbyellidae
 Strophomenida - Furcitellidae
 Strophomenida - Rafinesquinidae
 Strophomenida - Strophomenidae
Strophomena septata Winchell and Schuchert 1892
"Bellimurina charlottae" = Bellimurina (Bellimurina) charlottae Winchell and Schuchert 1892
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
 Orthida - Plaesiomyidae
"Plaesiomys meedsi" = Dinorthis meedsi
"Plaesiomys meedsi" = Dinorthis meedsi Winchell and Schuchert 1892
 Orthida - Hesperorthidae
 Orthida - Glyptorthidae
 Orthida - Platystrophiidae
 Orthida - Dalmanellidae
 Orthida - Draboviidae
 Protorthida - Skenidiidae
 Atrypida - Septatrypidae
 Atrypida - Anazygidae
"Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
 Pentamerida - Parastrophinidae
Craniata
 Craniida - Craniidae
"Acanthocrania setigeria" = Acanthocrania setigera Hall 1866
[entered as Acanthocrania setigera]
Lingulata
 Lingulida - Pseudolingulidae
 Lingulida - Obolidae
 Lingulida - Trematidae
Trilobita
 Asaphida - Asaphidae
Isotelus gigas Dekay 1824 trilobite
 Corynexochida - Illaenidae
Thaleops sp. Conrad 1843 trilobite
 Phacopida - Cheiruridae
"Acanthoparypha evetti" = Acanthoparypha evitti
"Acanthoparypha evetti" = Acanthoparypha evitti Chatterton and Ludvigsen 1976 trilobite
 Phacopida - Pterygometopidae
Sceptaspis lincolnensis Branson 1909 trilobite
Eomonorachus intermedius Walcott 1879 trilobite