Sardeson Collection, Dunleith Formation, Sherwood Member, Illinois and Iowa: Shermanian, Illinois, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita
- Phacopida
- Encrinuridae
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Encrinuroides vigilans
(Hall 1847)
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recombined as Erratencrinurus vigilans | |||||||
Trilobita
- Phacopida
- Cheiruridae
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Ceraurus pleurexanthemus
Green 1832
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Trilobita
- Asaphida
- Asaphidae
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Isotelus gigas
(Dekay 1824)
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recombined as Asaphus gigas | |||||||
Trilobita
- Corynexochida
- Illaenidae
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Illaenus sp.
Dalman 1827
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Rhynchonellata
- Orthida
- Plaesiomyidae
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Plaesiomys meedsi
(Winchell and Schuchert 1892)
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recombined as Dinorthis meedsi | |||||||
Rhynchonellata
- Orthida
- Glyptorthidae
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Glyptorthis bellarugosa
(Conrad 1843)
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Rhynchonellata
- Orthida
- Hesperorthidae
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Hesperorthis tricenaria
(Conrad 1843)
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Rhynchonellata
- Orthida
- Dalmanellidae
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Paucicrura rogata
(Sardeson 1892)
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Rhynchonellata
- Atrypida
- Anazygidae
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Zygospira recurvirostris
(Hall 1847)
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recombined as Anazyga recurvirostra | |||||||
Zygospira uphami
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Rhynchonellata
- Atrypida
- Cyclospiridae
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Cyclospira bisulcata
(Emmons 1842)
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Lepidocyclus capax
(Conrad 1842)
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recombined as Hiscobeccus capax | |||||||
Rhynchonellata
- Pentamerida
- Parastrophinidae
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Parastrophina bernensis
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Rafinesquina deltoidea
(Conrad 1838)
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Strophomenata
- Strophomenida
- Strophomenidae
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Strophomena trilobita
(Owen 1852)
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recombined as Strophomena trilobata | |||||||
Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella minnesotensis
(Sardeson 1892)
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Lingulata
- Lingulida
- Discinidae
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Orbiculoidea pelopea
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Lingulata
- Lingulida
- Pseudolingulidae
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? Pseudolingula iowensis
(Owen 1844)
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Lingulata
- Lingulida
- Obolidae
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Palaeoglossa hurlburti
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Lingulata
- Lingulida
- Lingulasmatidae
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Lingulasma galenensis
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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
Lithology and environment
Primary lithology: | calcareous "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 |
Reason for describing collection: | biostratigraphic analysis |
Metadata
Database number: | 23804 | ||
Authorizer: | S. Holland | Enterer: | T. Hanson |
Modifier: | S. Holland | Research group: | marine invertebrate |
Created: | 2002-07-21 17:10:18 | Last modified: | 2004-10-22 12:59:58 |
Access level: | the public | Released: | 2002-07-21 17:10:18 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
6752. | 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] |