Antelope Creek (SDSM V-634): Duchesnean, South Dakota
collected by P. R. Bjork 1963
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Perissodactyla
- Equidae
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Epihippus intermedius
(Peterson 1932)
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| (1 measurement) | ||||||||||
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= Duchesnehippus intermedius
Peterson 1932
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Alroy 2002 | |||||||||
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Mammalia
- Perissodactyla
- Amynodontidae
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Amynodontopsis bodei
Stock 1933
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus sp.
Agassiz 1843
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | South Dakota | County: | Harding |
| Coordinates: | 45.6° North, 103.9° West (view map) | ||||
| Paleocoordinates: | 47.3° North, 93.9° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| 10 m.y. bin: | Cenozoic 3 | ||
| *Period: | Tertiary | ||
| Key time interval: | Duchesnean | ||
| Age range of interval: | 39.70000 - 37.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Slim Buttes |
Lithology and environment
| Primary lithology: | "siliciclastic" |
| Lithology description: the formation "is a thin sequence of variegated sands, silts, and clays" | |
| Environment: | fluvial indet. |
| Geology comments: fauna "suggests that a permanently flowing river was present" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | SDSM | ||
| Collectors: | P. R. Bjork | Collection dates: | 1963 |
Metadata
| Database number: | 16824 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | J. Alroy | Research group: | vertebrate |
| Created: | 1997-04-12 00:00:00 | Last modified: | 2008-09-10 12:41:41 |
| Access level: | the public | Released: | 1997-04-12 00:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 1067. | P. R. Bjork. 1967. Latest Eocene vertebrates from northwestern South Dakota. Journal of Paleontology 41(1):227-236 [J. Alroy/J. Alroy/J. Alroy] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] |