Three quarters of a mile southwest of Ossian: Richmondian, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
|
|||||||
|
Lepidocyclus perlamellosus
(Whitfield 1878)
|
|||||||
|
Strophomenata
- Strophomenida
- Furcitellidae
|
|||||||
|
Megamyonia knighti n. gen., n. sp.
Wang 1949
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Iowa | County: | Winneshiek |
| Coordinates: | 43.1° North, 91.3° West (view map) | ||||
| Paleocoordinates: | 19.1° South, 114.9° West (Wright 2013) | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | basin |
Time
| Period: | Ordovician | Epoch: | Late Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| Key time interval: | Richmondian | ||
| Age range of interval: | 449.6 - 445.5 m.y. ago |
Stratigraphy
| Geological group: | Maquoketa | Formation: | Fort Atkinson |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | dolomite |
| Lithology description: The Fort Atkinson is a very crystalline, rough-textured, speckled, brownish red to light gray dolomite. | |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:Elias 1982 | |
Metadata
| Database number: | 204093 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2019-08-30 22:52:36 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2019-08-30 22:52:36 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 52181. | Y. Wang. 1949. Maquoketa Brachiopoda of Iowa. Geological Society of America Memoir 42:1-55 [P. Wagner/P. Wagner] |