Cut on Highway BB, one mile south of intersection with Highway M.: Trempealeauan, Missouri
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Paragastropoda
- Mimospirida
- Onychochilidae
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Scaevogyra swezeyi
Whitfield 1878
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Tergomya
- Tryblidiida
- Tryblidiidae
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Proplina sp.
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= Proplina suttoni
Stinchcomb 1986
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Stinchcomb 1986 | ||||||
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Tergomya
- Kiringellida
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Hypseloconus bessemerense
(Ulrich et al. 1943)
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Trilobita
- Asaphida
- Dikelocephalidae
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Calvinella sp.
Walcott 1914
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Trilobita
- Ptychopariida
- Plethopeltidae
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Plethopeltis sp.
Raymond 1913
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Plethometopus sp.
Ulrich 1931
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Missouri | County: | St. Francois |
| Coordinates: | 37.9° North, 90.6° West (view map) | ||||
| Paleocoordinates: | 22.9° South, 86.4° West | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Furongian |
| 10 m.y. bin: | Cambrian 5 | ||
| Key time interval: | Trempealeauan | ||
| Age range of interval: | 489.2 - 485.4 m.y. ago |
Stratigraphy
| Formation: | Potosi |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | lithified cherty/siliceous dolomite |
| Lithology description: thick, cherty dolomite with digitate stromatolites | |
| Environment: | reef, buildup or bioherm |
| Geology comments: Strata are in pockets of the Ozark Uplift. | |
Taphonomy
| Modes of preservation: | replaced with silica |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Collection size: | 5 specimens |
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:Taxonomic list may not include some hyperstrophic gastropods, undescribed trilobites and stromatolites which are found in the formation but not collected. | |
Metadata
| Also known as: | SW¼, SW¼, SW¼, Sec. 8 T. 36 N., R. 4 E. St. Francois County | ||
| Database number: | 49504 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2005-04-18 14:07:49 | Last modified: | 2005-04-18 17:16:23 |
| Access level: | the public | Released: | 2005-04-18 14:07:49 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 13253. | B.L. Stinchcomb and D. Jung Echols. 1966. Missouri Upper Cambrian Monoplacophora previously considered cephalopods. Journal of Paleontology 40(3):647-650 [P. Wagner/P. Wagner/P. Wagner] |
Secondary references:
| 682 | B. L. Stinchcomb. 1986. New Monoplacophora (Mollusca) from Late Cambrian and Early Ordovician of Missouri. Journal of Paleontology 60(3):606-626 [M. Patzkowsky/P. Borkow/J. Alroy] |