Sardeson Collection, Nachusa 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
- Strophomenidae
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Strophomena cf. plattinensis
Fenton 1928
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Strophomenata
- Strophomenida
- Furcitellidae
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Oepikina minnesotensis
(Winchell 1881)
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Trigrammaria winchelli
(Hall and Clarke 1892)
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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
- Rhynchonellida
- Trigonirhynchiidae
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Rostricellula minnesotensis
(Sardeson 1892)
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Lingulata
- Lingulida
- Obolidae
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Pachyglossella elderi
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Lingulata
- Lingulida
- Pseudolingulidae
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? Pseudolingula iowensis
(Owen 1844)
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Pseudolingula eva
(Billings 1861)
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Lingulata
- Lingulida
- Trematidae
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Trematis huronensis
Billings 1865
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Lingulata
- Lingulida
- Discinidae
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Orbiculoidea cf. lamellosa
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Lingulata
- Siphonotretida
- Siphonotretidae
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Schizambon sp.
Walcott 1884
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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
- Lichida
- Lichidae
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Amphilichas sp.
Raymond 1905
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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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Thaleops sp.
Conrad 1843
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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: | Nachusa |
| Stratigraphic resolution: | formation |
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: | 23792 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2002-07-20 21:36:49 | Last modified: | 2004-10-22 11:32:58 |
| Access level: | the public | Released: | 2002-07-20 21:36:49 |
| 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] |