about 1 mile west of Higdon: Gasconadian, Missouri
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ellesmerocerida
- Ellesmeroceratidae
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Caseoceras subconicum
Ulrich et al. 1943
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Ulrich et al. 1943 | ||||||
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Ectenoceras higdonense
Ulrich et al. 1943
|
Ulrich et al. 1943 | ||||||
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Ellesmeroceras higdonense
Ulrich et al. 1944
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2 specimens | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Missouri | County: | Madison |
| Coordinates: | 37.6° North, 90.2° West (view map) | ||||
| Paleocoordinates: | 24.4° South, 81.0° West | ||||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Ordovician | Epoch: | Early/Lower Ordovician |
| Stage: | Tremadocian | 10 m.y. bin: | Ordovician 1 |
| Key time interval: | Gasconadian | ||
| Age range of interval: | 485.40000 - 477.70000 m.y. ago |
Stratigraphy
| Formation: | Gasconade |
Lithology and environment
| Primary lithology: | dolomite |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body,original aragonite,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 101764 | ||
| Authorizer: | B. Kröger | Enterer: | B. Kröger |
| Modifier: | B. Kröger | Research group: | marine invertebrate |
| Created: | 2011-01-02 03:37:32 | Last modified: | 2017-10-11 02:41:36 |
| Access level: | the public | Released: | 2011-01-02 03:37:32 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 16397. | E. O. Ulrich, A. F. Foerste, A. K. Miller and W. M. Furnish. 1944. Ozarkian and Canadian cephalopods, longicones and summary. Geological Society of America Special Paper 58:1-226 [P. Wagner/P. Wagner/B. Kröger] |
Secondary references:
| 13254 | E. O. Ulrich, A. F. Foerste, and A.K. Miller. 1943. Ozarkian and Canadian cephalopods. Part II, Brevicones. Geological Society of America Special Papers 49:1-240 [P. Wagner/P. Wagner/M. Uhen] |