Sardeson Collection, Mifflin Formation, Illinois and Iowa: Blackriveran, Illinois, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Strophomenida
- Furcitellidae
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Oepikina minnesotensis
(Winchell 1881)
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Rhynchonellata
- Orthida
- Plaesiomyidae
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Campylorthis deflecta
(Conrad 1843)
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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
- Plectorthidae
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Doleroides pervetus
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Rhynchonellata
- Orthida
- Draboviidae
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Pionodema conradi
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Rhynchonellata
- Atrypida
- Protozygidae
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Protozyga nicolleti
(Winchell and Schuchert 1892)
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| recombined as Manespira nicolleti | ||||||||||
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides anthonense
(Sardeson 1894)
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Rostricellula minnesotensis
(Sardeson 1892)
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Lingulata
- Lingulida
- Pseudolingulidae
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? Pseudolingula iowensis
(Owen 1844)
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Craniata
- Craniida
- Craniidae
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Petrocrania trentonensis
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Acanthocrania granulosa
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Acanthocrania setigeria
(Hall 1866)
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| recombined as Acanthocrania setigera | ||||||||||
| [entered as Acanthocrania setigera] | ||||||||||
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Trilobita
- Asaphida
- Asaphidae
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Isotelus simplex
(Raymond and Narraway 1910)
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Basiliella barrandi
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| spelled with current rank as Basilicus (Basiliella) | ||||||||||
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Trilobita
- Proetida
- Bathyuridae
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Raymondites longispinus
(Walcott 1876)
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| recombined as Bathyurus (Raymondites) longispinus | ||||||||||
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Trilobita
- Corynexochida
- Illaenidae
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Illaenus sp.
Dalman 1827
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Bumastoides milleri
(Billings 1859)
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Trilobita
- Phacopida
- Pterygometopidae
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Sceptaspis lincolnensis
(Branson 1909)
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Trilobita
- Phacopida
- Cheiruridae
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Gabriceraurus mifflinensis
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Ceraurinella templetoni
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Ceraurinella scofieldi
(Clarke 1897)
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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: | Mifflin |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | argillaceous "limestone" |
| Includes fossils? | Y |
| Lithology description: "Thinly bedded argillaceous and shaly fossiliferous limestone." 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. 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: | 23790 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2002-07-20 20:56:56 | Last modified: | 2004-10-22 11:32:28 |
| Access level: | the public | Released: | 2002-07-20 20:56:56 |
| 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] |