Dover Mills: Richmondian, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Tergomya
- Archinacellida
- Archinacellidae
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Archinacella rotunda
Ulrich and Scofield 1897
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Gastropoda
- Euomphalina
- Platyceratidae
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Cyclonema bilix
(Conrad 1842)
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Gastropoda
- Bellerophontida
- Sinuitidae
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Protowarthia concinna
Ulrich and Scofield 1897
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| synonym of Sinuites subcompressa | ||||||||||
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Gastropoda
- Murchisoniina
- Lophospiridae
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Lophospira quadrisulcata
Ulrich and Scofield 1897
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| recombined as Eunema quadrisulcata | ||||||||||
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Gastropoda
- Murchisoniina
- Phanerotrematidae
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Plethospira semele
(Hall 1861)
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| recombined as Brachytomaria semele | ||||||||||
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Gastropoda
- Murchisoniina
- Hormotomidae
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Hormotoma gracilis
(Hall 1847)
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| Hormotoma gracilis multivolvis | ||||||||||
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Bivalvia
- Solemyida
- Ctenodontidae
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Ctenodonta calvini
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Iowa |
| Coordinates: | 43.0° North, 91.7° West (view map) | ||
| Paleocoordinates: | 19.3° South, 60.0° West |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| Key time interval: | Richmondian | Conodont zone: | Amorphognathus ordovicicus |
| Age range of interval: | 449.80000 - 446.00000 m.y. ago |
Stratigraphy
| Geological group: | Maquoketa | Formation: | Scales Shale | Member: | Elgin |
| Stratigraphic resolution: | member |
Lithology and environment
| Primary lithology: | "limestone" |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 172795 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2015-08-23 22:31:43 | Last modified: | 2019-01-16 16:54:43 |
| Access level: | the public | Released: | 2015-08-23 22:31:43 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 16127. | H. S. Ladd. 1925. Depauperate fauna of the Maquoketa. Geological Society of America Bulletin 36(1):1-228 [P. Wagner/P. Wagner] |