Dunleith Fm, Eagle Point Member Gastropoda and Monoplacophora, Illinois and Iowa: Shermanian, Illinois, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Colpodon sp.
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Tergomya
- Tryblidiida
- Tryblidiidae
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Platyceras depressum
Ulrich and Scofield 1897
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recombined as Helcionopsis depressum | ||||||||||
Tergomya
- Archinacellida
- Archinacellidae
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Triblydium (Palacmacea) humilis
(Ulrich and Scofield 1897)
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recombined as Floripatella humilis | ||||||||||
"Triblydium" (Palacmacea) humilis | ||||||||||
Tergomya
- Cyrtonellida
- Cyrtolitidae
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Cyrtolites dilatatus
(Ulrich and Scofield 1897)
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original and current combination Cyrtolites dilatus | ||||||||||
Cyrtolites retrorsus
Ulrich and Scofield 1897
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Tergomya
- Scenellidae
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Scenella compressa
Ulrich and Scofield 1897
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"Scenella" compressa | ||||||||||
Gastropoda
- Bellerophontida
- Pterothecidae
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Carinopsis acuta
(Ulrich and Scofield 1897)
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synonym of Carinaropsis minima | ||||||||||
Gastropoda
- Bellerophontida
- Sinuitidae
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Sinuites cancellatus
(Hall 1847)
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Sinuites pervolutus
(Ulrich and Scofield 1897)
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recombined as Sinuites pervoluta | ||||||||||
Gastropoda
- Bellerophontida
- Bucaniidae
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Salpingostoma buelli
(Whitfield 1878)
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Bucania emmonsi
Ulrich and Scofield 1897
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recombined as Loxobucania emmonsi | ||||||||||
Phragmolites obliquus
(Ulrich and Scofield 1897)
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Gastropoda
- Bellerophontida
- Plectonotidae
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Tetranota obsoleta
Ulrich and Scofield 1897
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Tetranota sexcarinata
Ulrich and Scofield 1897
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Tetranota bidorsata
(Hall 1847)
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Gastropoda
- Murchisoniina
- Hormotomidae
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Hormotoma gracilis
(Hall 1847)
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Gastropoda
- Murchisoniina
- Trochonematidae
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Trochonema unbilicatum
(Hall 1847)
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recombined as Trochonema umbilicata | ||||||||||
Trochonema retrorsum
Ulrich and Scofield 1897
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Gastropoda
- Murchisoniina
- Lophospiridae
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Lophospira oweni
Ulrich and Scofield 1897
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recombined as Paupospira oweni | ||||||||||
Gyronema pulchellum
Ulrich and Scofield 1897
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Gyronema semicarinatum
(Salter 1859)
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Lophospira concinnula
Ulrich and Scofield 1897
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recombined as Eunema concinnula | ||||||||||
Lophospira bicincta
(Hall 1847)
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= Eunema centralis
Ulrich and Scofield 1897
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Wagner 2023 | |||||||||
Lophospira serratula
(Salter 1859)
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recombined as Lophospira serrulata | ||||||||||
Lophospira pulchella
Ulrich and Scofield 1897
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synonym of Lophospira perangulata | ||||||||||
Lophospira spironema
Ulrich and Scofield 1897
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Gastropoda
- Murchisoniina
- Eotomariidae
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Liospira modesta
Ulrich and Scofield 1897
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Liospira angustata
Ulrich and Scofield 1897
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Liospira americana
(Billings 1860)
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Liospira vitruvia
(Billings 1865)
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Clathrospira conica
Ulrich and Scofield 1897
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Eunema clivosa
(Sardeson 1892)
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synonym of Clathrospira conica | ||||||||||
Clathrospira subconica
(Hall 1847)
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Eotomaria supracingulata
(Billings 1857)
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recombined as Paraliospira supracingulata | ||||||||||
Liospira abrupta
Ulrich and Scofield 1897
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recombined as Paraliospira abrupta | ||||||||||
Gastropoda
- Murchisoniina
- Subulitidae
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Fusispira spicula
Sardeson 1892
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Fusispira subfusiformis
(Hall 1847)
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Subulites sp.
Emmons 1842
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Gastropoda
- Euomphalina
- Platyceratidae
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Strophostylus textilis
(Miller 1897)
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corrected as Cyclonema textilis | ||||||||||
Cyclonema varicosum
(Hall 1861)
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Gastropoda
- Euomphalina
- Raphistomatidae
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Raphistoma peracutum
Ulrich and Scofield 1897
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recombined as Scalites peracutum | ||||||||||
Bivalvia
- Nuculanida
- Malletiidae
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Palaeoneilo sp.
Hall and Whitfield 1869
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Bivalvia
- Nuculida
- Praenuculidae
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Similodonta sp.
Soot-Ryen 1964
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Bivalvia
- Solemyida
- Ctenodontidae
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Tancrediopsis sp.
(Beushausen 1895)
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original and current combination Ctenodonta (Tancrediopsis) | ||||||||||
Ctenodonta sp.
Salter 1852
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Bivalvia
- Cyrtodontida
- Cyrtodontidae
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Vanuxemia sp.
Billings 1858
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Cyrtodonta sp.
Billings 1858
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Cyrtodontula sp.
Tomlin 1931
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Bivalvia
- Modiomorphida
- Modiomorphidae
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Modiolopsis sp.
Hall 1847
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Orthodesma sp.
Hall and Whitfield 1875
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Modiolodon sp.
Ulrich 1894
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Aristerella sp.
Ulrich 1894
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Bivalvia
- Megalodontida
- Plethocardiidae
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Plethocardia sp.
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Bivalvia
- Lyrodesmatidae
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Lyrodesma sp.
Conrad 1841
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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: | Eagle Point |
Stratigraphic resolution: | member |
Lithology and environment
Primary lithology: | dolomitic "limestone" |
Includes fossils? | Y |
Lithology description: Slightly dolomitic 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. | |
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: | 23653 | ||
Authorizer: | S. Holland, P. Wagner | Enterer: | T. Hanson, P. Wagner |
Modifier: | S. Holland | Research group: | marine invertebrate |
Created: | 2002-07-18 10:22:12 | Last modified: | 2004-10-22 12:00:33 |
Access level: | the public | Released: | 2002-07-18 10:22:12 |
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] |