Dunleith Fm, Wall Member Gastropoda and Monoplacophora, Illinois and Iowa: Shermanian, Illinois, Iowa

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Eunema simile Ulrich and Scofield 1897
Bivalvia - Nuculanida - Cucullellidae
Nuculites sp. Conrad 1841
Bivalvia - Solemyida - Ctenodontidae
Ctenodonta sp. Salter 1852
Bivalvia - Nuculida - Praenuculidae
Similodonta sp. Soot-Ryen 1964
Bivalvia - Lyrodesmatidae
Lyrodesma sp. Conrad 1841
Bivalvia - Modiomorphida - Modiomorphidae
Prolobella sp. Ulrich 1894
Modiolodon sp. Ulrich 1894
Endodesma sp. Ulrich 1894
synonym of Cymatonota
Saffordia sp. Ulrich 1894
Orthodesma sp. Hall and Whitfield 1875
Modiolopsis sp. Hall 1847
Bivalvia - Megalodontida - Plethocardiidae
Plethocardia sp.
Bivalvia - Grammysiidae
Cuneamya sp. Hall and Whitfield 1875
Bivalvia - Pholadomyida - Pholadomyidae
Rhytimya sp. Ulrich 1893
Bivalvia - Pholadomyida
Sphenolium sp. Miller 1889
Bivalvia - Cyrtodontida - Cyrtodontidae
Matheria sp. Billings 1858
Cyrtodonta sp. Billings 1858
Vanuxemia sp. Billings 1858
Cyrtodontula sp. Tomlin 1931
Bivalvia - Myalinida - Ambonychiidae
Cleionychia sp. Ulrich 1892
Ambonychiopsis sp. Isberg 1934
Gastropoda - Euomphalina - Macluritidae
Maclurites crassus (Ulrich and Scofield 1897)
recombined as Maclurites crassa
Gastropoda - Euomphalina - Holopeidae
Holopea similis Ulrich and Scofield 1897
Holopea excelsa Ulrich and Scofield 1897
Holopea paludiniformis Hall 1847
[entered as Holopea paludinaeformis]
Holopea pyrene Billings 1865
Holopea supraplana Ulrich and Scofield 1897
Holopea appressa Ulrich and Scofield 1897
Raphistomina rugata Ulrich and Scofield 1897
Gastropoda - Euomphalina - Helicotomidae
Ophiletina angularis Ulrich and Scofield 1897
Gastropoda - Euomphalina - Raphistomatidae
Raphistoma sp. Hall 1847
Raphistoma peracutum Ulrich and Scofield 1897
recombined as Scalites peracutum
Gastropoda - Euomphalina - Platyceratidae
Strophostylus textilis (Miller 1897)
corrected as Cyclonema textilis
Gastropoda - Murchisoniina - Eotomariidae
Clathrospira subconica (Hall 1847)
Clathrospira conica Ulrich and Scofield 1897
Liospira angustata Ulrich and Scofield 1897
Liospira progue (Billings 1860)
recombined as Liospira progne
Liospira americana (Billings 1860)
Liospira vitruvia (Billings 1865)
Gastropoda - Murchisoniina - Loxonematidae
Hormotoma trentonensis Ulrich and Scofield 1897
recombined as Omospira trentonensis
Gastropoda - Murchisoniina - Hormotomidae
Hormotoma gracilis (Hall 1847)
Hormotoma angustata (Hall 1847)
recombined as Hormotoma gracilis angustatus
Lophospira angustina (Ulrich and Scofield 1897)
recombined as Hormotoma minnesotensis
Michelia neglectus (Ulrich and Scofield 1897)
recombined as Hormotoma neglecta
Gastropoda - Murchisoniina - Murchisoniidae
Hormotoma salteri Ulrich and Scofield 1897
recombined as Cyrtostropha salteri
Gastropoda - Murchisoniina - Trochonematidae
Trochonema subcrassum Ulrich and Scofield 1897
Trochonema fragile Ulrich and Scofield 1897
Trochonema unbilicatum (Hall 1847)
recombined as Trochonema umbilicata
Trochonema altum Ulrich and Scofield 1897
Eunema robbinsi (Ulrich and Scofield 1897)
synonym of Globonema niota
Eunema salteri Ulrich and Scofield 1897
replaced by Globonema niota
Gastropoda - Murchisoniina - Lophospiridae
Lophospira elevata Ulrich and Scofield 1897
recombined as Paupospira elevata
Lophospira medialis Ulrich and Scofield 1897
    = Paupospira burginensis Ulrich and Scofield 1897
Wagner 2023
Lophospira sumnerensis (Safford 1869)
recombined as Paupospira sumnerensis
Hormotoma major (Hall 1852)
recombined as Lophospira major
Lophospira perforata Ulrich and Scofield 1897
synonym of Lophospira perangulata
Lophospira obliqua Ulrich and Scofield 1897
Lophospira bicincta (Hall 1847)
    = Eunema centralis Ulrich and Scofield 1897
Wagner 2023
Lophospira fillmorensis Ulrich and Scofield 1897
synonym of Eunema concinnula
Gastropoda - Murchisoniina - Subulitidae
Subulites sp. Emmons 1842
Subulites pergracilis Ulrich and Scofield 1897
Subulites elongatus (Portlock 1843)
Hormotoma bellicincta (Hall 1847)
recombined as Eroicaspira bellicincta
Fusispira nobilis Ulrich and Scofield 1897
Fusispira planulata Ulrich and Scofield 1897
Fusispira subbrevis Ulrich and Scofield 1897
Fusispira inflata (Meek and Worthen 1870)
Fusispira intermedia Ulrich and Scofield 1897
Fusispira subfusiformis (Hall 1847)
Fusispira ventricosa Hall 1872
Fusispira angusta Ulrich and Scofield 1897
Fusispira subplana (Ulrich and Scofield 1897)
original and current combination Fusispira angusta subplana
Fusispira convexis (Ulrich and Scofield 1897)
original and current combination Fusispira convexa
Cyrtolites wykoffensis (Ulrich and Scofield 1897)
original and current combination Cyrtospira wykoffensis
Cyrtospira wykoffensis Ulrich and Scofield 1897
Gastropoda - Bellerophontida - Temnodiscidae
Tropidodiscus subacutus (Ulrich and Scofield 1897)
recombined as Alaskadiscus subacutus
Gastropoda - Bellerophontida - Bucaniidae
Salpingostoma sculptile (Ulrich and Scofield 1897)
original and current combination Salpingostoma sculptilis
Phragmolites compressus Conrad 1838
Phragmolites dyeri (Hall 1872)
Bucania elliptica Ulrich and Scofield 1897
Bucania sublata Ulrich and Scofield 1897
Bucania lindleyi (Safford 1869)
recombined as Loxobucania lindsleyi
Kokenospira costalis (Ulrich and Scofield 1897)
Gastropoda - Bellerophontida - Bellerophontidae
Bellerophon platystoma (Meek and Worthen 1868)
recombined as Sphenosphaera platystoma
"Bellerophon" platystoma
Bellerophon clausus Ulrich and Scofield 1897
replaced by Sphenosphaera rogersensis
"Bellerophon" clausus
Gastropoda - Bellerophontida - Plectonotidae
Tetranota bidorsata (Hall 1847)
Tetranota obsoleta Ulrich and Scofield 1897
Tetranota sexcarinata Ulrich and Scofield 1897
Gastropoda - Bellerophontida - Sinuitidae
Sinuites pervolutus (Ulrich and Scofield 1897)
recombined as Sinuites pervoluta
Sinuites cancellatus (Hall 1847)
Tergomya - Scenellidae
Scenella compressa Ulrich and Scofield 1897
"Scenella" compressa
Tergomya - Cyrtonellida - Cyrtolitidae
Cyrtolites ornatus Conrad 1838
see common names

Geography
Country:United States State/province:Illinois, Iowa
Coordinates: 42.0° North, 90.5° West (view map)
Paleocoordinates:21.3° South, 63.6° West
Basis of coordinate:estimated from map
Geographic resolution:basin
Time
Period:Ordovician Epoch:Late/Upper Ordovician
10 m.y. bin:Ordovician 4-5
*Period:Middle Ordovician - Late/Upper Ordovician *Local age/stage:Shermanian
Key time interval:Shermanian
Age range of interval:457.00000 - 449.80000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Galena Formation:Dunleith Member:Wall
Stratigraphic resolution:member
Lithology and environment
Primary lithology: argillaceous "limestone"
Includes fossils?Y
Lithology description: 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
Environment:carbonate indet.
Geology comments: Environmental call by T. Hanson.
Taphonomy
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection,survey of museum collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: "[B]ased on a review of the Sardeson Collection at the University of Minnesota, Weiss (1953), Ulrich and Scofield (1895), the unpublished work of Levorson and Gerk, and the list in Stauffer and Thiel (1941)."
Metadata
Database number:23668
Authorizer:S. Holland, P. Wagner Enterer:T. Hanson, P. Wagner
Modifier:S. Holland Research group:marine invertebrate
Created:2002-07-18 12:40:55 Last modified:2004-10-22 12:02:03
Access level:the public Released:2002-07-18 12:40:55
Creative Commons license:CC BY
Reference information

Primary reference:
6737. R. E. Sloan and G. F. Webers. 1987. Stratigraphic ranges of Middle and Late Ordovician Gastropoda and Monoplacophora of Minnesota. In R. E. Sloan (ed.), Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 183-186 [S. Holland/T. Hanson/S. Bruning]

Secondary references:

9042 P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]