Antelope Creek (SDSM V-582): Duchesnean, South Dakota
collected by B. White, J. Clark 1958
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
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Allognathosuchus cf. riggsi
Patterson 1931
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synonym of Alligator prenasalis | ||||||||||
jaw fragment | ||||||||||
Reptilia
- Testudines
- Emydidae
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? Graptemys sp.
Agassiz 1857
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compared to G. inornata and G. cordifera | ||||||||||
= Pseudograptemys sp.
Hutchison 1996
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Alroy 2008 | |||||||||
see Hutchison 1996 | ||||||||||
Reptilia
- Testudines
- Trionychidae
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Trionychidae indet.
Gray 1825
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Mammalia
- Perissodactyla
- Equidae
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Epihippus intermedius
(Peterson 1932)
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(5 measurements) | ||||||||||
= Duchesnehippus intermedius
Peterson 1932
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Alroy 2002 | |||||||||
Mammalia
- Perissodactyla
- Amynodontidae
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Amynodontopsis bodei
Stock 1933
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(5 measurements) | ||||||||||
Mammalia
- Perissodactyla
- Tapiridae
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? Colodon cingulatus
Douglass 1902
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(6 measurements) | ||||||||||
Mammalia
- Perissodactyla
- Brontotheriidae
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Teleodus thyboi n. sp.
Bjork 1967
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(5 measurements) | ||||||||||
= Duchesneodus uintensis
Peterson 1931
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Alroy 2002 | |||||||||
see also Lucas and Schoch 1989b | ||||||||||
Mammalia
- Protoceratidae
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Leptotragulinae indet.
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invalid subgroup of Protoceratidae | ||||||||||
Mammalia
- Agriochoeridae
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Agriochoeridae indet.
Leidy 1869
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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 |
Stage: | Bartonian | 10 m.y. bin: | Cenozoic 3 |
*Period: | Tertiary | ||
Key time interval: | Duchesnean | ||
Age range of interval: | 40.40000 - 37.20000 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: | survey of museum collection | ||
Reason for describing collection: | general faunal/floral analysis | ||
Museum repositories: | SDSM | ||
Collectors: | B. White, J. Clark | Collection dates: | 1958 |
Metadata
Database number: | 16823 | ||
Authorizer: | J. Alroy | Enterer: | J. Alroy |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 1997-04-12 00:00:00 | Last modified: | 2008-09-10 12:41:32 |
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] | |
26812 | J. Alroy. 2008. Synonymies, reidentifications, and other arbitrary pronouncements mostly concerning fossil vertebrates. [J. Alroy/J. Alroy] |