Quimbys Mill Formation Echinoderms, Upper Mississippi Valley: Blackriveran, Illinois, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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informal Cincinnaticrinid sp.
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| Cincinnaticrinid | ||||||||||
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Rhombifera
- Pleurocystitidae
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Pleurocystites squamosus
Billings 1874
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Amecystis woodi
Broadhead and Strimple 1975
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Crinoidea
- Cupulocrinidae
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Cupulocrinus gracilis
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Crinoidea
- Porocrinida
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Carabocrinus sp.
Billings 1857
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Porocrinus pentagonius
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Porocrinus smithi
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Crinoidea
- Dendrocrinida
- Dendrocrinidae
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Dendrocrinus sp.
Hall 1852
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Crinoidea
- Merocrinidae
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Merocrinus britonensis
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Crinoidea
- Calceocrinida
- Calceocrinidae
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Anulocrinus forrestonensis
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Cremacrinus arctus
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Cremacrinus sp.
Ulrich 1886
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Crinoidea
- Monobathrida
- Glyptocrinidae
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Abludoglyptocrinus charltoni
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Edrioasteroidea
- Pyrgocystidae
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Pyrgocystis sardesoni
Bather 1915
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Edrioasteroidea
- Isorophida
- Agelacrinitidae
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Agelacrinites sp.
Vanuxem 1842
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Edrioasteroidea
- Hemicystitidae
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Hemicystites paulianus
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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: | Blackriveran |
| Key time interval: | Blackriveran | ||
| Age range of interval: | 457.00000 - 449.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Quimbys Mill |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | "limestone" |
| Includes fossils? | Y |
| Lithology description: "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. | |
| 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: | 23449 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2002-07-15 09:47:08 | Last modified: | 2004-10-22 11:27:25 |
| Access level: | the public | Released: | 2002-07-15 09:47:08 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6707. | D. R. Kolata, J. C. Brower, and T. J. Frest. 1987. Upper Mississippi Valley Champlainian and Cincinnatian echinoderms. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 179-181 [S. Holland/T. Hanson/T. Hanson] |