Chapin Fm., Streptorhynchus Zone, north-central Iowa: Tournaisian, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Rhynchonellata
- Orthida
- Schizophoriidae
|
|||||||
|
Schizophoria chouteauensis
Weller 1914
|
|||||||
|
Rhynchonellata
- Rhynchonellida
- Camarotoechiidae
|
|||||||
|
Camarotoechia chouteauensis
|
|||||||
|
Rhynchonellata
- Spiriferida
- Spiriferidae
|
|||||||
|
Spirifer biplicoides
|
|||||||
|
Spirifer platynotus
|
|||||||
|
Strophomenata
- Orthotetida
- Schuchertellidae
|
|||||||
|
Streptorhynchus tenuicostatum
Weller 1914
|
|||||||
|
Strophomenata
- Orthotetida
- Pulsiidae
|
|||||||
|
Schellwienella inflata
(White and Whitfield 1862)
|
|||||||
|
Strophomenata
- Productida
- Linoproductidae
|
|||||||
|
Productus ovatus
Hall 1858
|
|||||||
|
Strophomenata
- Productida
- Araksalosiidae
|
|||||||
|
Productella concentrica
(Hall 1857)
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Iowa | County: | Franklin |
| Coordinates: | 42.8° North, 93.2° West (view map) | ||||
| Paleocoordinates: | 26.8° South, 52.8° West (Wright 2013) | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | local area |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| Stage: | Tournaisian | 10 m.y. bin: | Carboniferous 1 |
| *Period: | Early/Lower Carboniferous | *Epoch: | Early/Lower Tournaisian | *Local age/stage: | Early/Lower Chouteau |
| Key time interval: | Tournaisian | Zone: | Streptorhynchus |
| Age range of interval: | 358.9 - 346.7 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Chapin | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Laudon (1931) placed the Chapin Member in the Hampton Formation. The Chapin has since been tentatively given formation status, and the Hampton is no longer recognized. See Woodson, 1989, An excursion to the historic Gilmore City quarries, Geol. Soc. of Iowa Guidebook 50. | |||||
Lithology and environment
| Primary lithology: | gray cherty/siliceous "carbonate" | ||
| Secondary lithology: | dolomite | ||
| Environment: | offshore shelf | Tectonic setting: | cratonic basin |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 3313 | ||
| Authorizer: | A. Miller | Enterer: | A. Webber |
| Modifier: | C. Ferguson | Research group: | marine invertebrate |
| Created: | 1999-07-29 11:51:29 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2000-11-20 13:53:18 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 146. | L. R. Laudon. 1931. The Stratigraphy of the Kinderhook Series of Iowa. Iowa Geological Survey 35:333-452 [A. Miller/A. Webber/P. Wagner] |