Sardeson Collection, Cummingsville Formation: Shermanian, Minnesota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Rosticellula colei
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Holtedahilina emaciata
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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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Pachyglossella elderi
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Pachyglossella riciniformis
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Lingulata
- Lingulida
- Trematidae
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Schizocrania filosa
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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] | ||||||||||
Craniata
- Craniopsida
- Craniopsidae
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Craniops minor
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Rhynchonellata
- Pentamerida
- Parastrophinidae
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Parastrophina bernensis
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides anthonense
(Sardeson 1894)
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Rhynchonellata
- Orthida
- Dalmanellidae
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Paucicrura rogata
(Sardeson 1892)
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Dalmanella cf. rara
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Dalmanella ? sculpta
Cooper 1956
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Rhynchonellata
- Orthida
- Draboviidae
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? Diorthelasma weissi
Rice 1987
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Pionodema circularis
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Pionodema subaequata
(Conrad 1843)
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Rhynchonellata
- Orthida
- Platystrophiidae
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Platystrophia trentonensis
McEwan 1919
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Platystrophia amoena
McEwan 1919
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Rhynchonellata
- Orthida
- Plectorthidae
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Plectorthis plicatella
(Hall 1847)
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Rhynchonellata
- Orthida
- Plaesiomyidae
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Dinorthis pectinella
Emmons 1842
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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
- Atrypida
- Anazygidae
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Zygospira recurvirostris
(Hall 1847)
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recombined as Anazyga recurvirostra | ||||||||||
Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Rhynchotrema wisconsinense
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Rhynchotrema laticosta
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Strophomenata
- Strophomenida
- Strophomenidae
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Strophomena septata
Winchell and Schuchert 1892
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Strophomena billingsi
Winchell and Schuchert 1893
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Strophomenata
- Strophomenida
- Furcitellidae
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Furcitella scofieldi
(Winchell and Schuchert 1892)
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original and current combination Strophomena scofieldi | ||||||||||
Oepikina inquassa
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original and current combination Opikina | ||||||||||
Oepikina minnesotensis
(Winchell 1881)
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Rafinesquina trentonensis
(Hall 1847)
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella minnesotensis
(Sardeson 1892)
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Sowerbyella curdsvillensis
(Foerste 1912)
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Strophomenata
- Billingsellida
- Clitambonitidae
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Vellamo americana
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Trilobita
- Corynexochida
- Illaenidae
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Illaenus sp.
Dalman 1827
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Bumastus orbicaudatus
(Billings 1859)
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Trilobita
- Phacopida
- Cheiruridae
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Ceraurus pleurexanthemus
Green 1832
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Trilobita
- Phacopida
- Encrinuridae
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Encrinuroides vigilans
(Hall 1847)
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recombined as Erratencrinurus vigilans | ||||||||||
Trilobita
- Phacopida
- Pterygometopidae
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Sceptaspis lincolnensis
(Branson 1909)
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Trilobita
- Asaphida
- Asaphidae
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Isotelus gigas
(Dekay 1824)
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recombined as Asaphus gigas | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Minnesota |
Coordinates: | 45.0° North, 93.3° West (view map) | ||
Paleocoordinates: | 17.8° South, 62.8° West | ||
Basis of coordinate: | based on political unit | ||
Geographic resolution: | outcrop |
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
Formation: | Prosser Limestone | Local bed: | 6, 7 | ||
Local order: | bottom to top | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Beds numbered by F. W. Sardeson. |
Lithology and environment
Taphonomy
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | biostratigraphic analysis |
Metadata
Database number: | 23278 | ||
Authorizer: | S. Holland | Enterer: | T. Hanson |
Modifier: | S. Holland | Research group: | marine invertebrate |
Created: | 2002-07-11 09:35:00 | Last modified: | 2004-10-22 11:40:06 |
Access level: | the public | Released: | 2002-07-11 09:35:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
6686. | W. F. Rice and E. P. Hedblom. 1987. Brachiopods and trilobites of the Sardeson Beds in the Twin Cities. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 131-135 [S. Holland/T. Hanson/T. Hanson] |