Horse Hill Low: Chadronian, Nebraska
collected by D. J. Ehret, B. J. MacFadden 2001
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Peltosaurus sp.
Cope 1873
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ElShafie 2024 | ||||||
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Reptilia
- Testudines
- Testudinidae
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Stylemys nebrascensis
Leidy 1851
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Gopherus laticuneus
(Cope 1873)
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Sioux |
| Coordinates: | 42.9° North, 103.6° West (view map) | ||||
| Paleocoordinates: | 44.2° North, 94.8° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
| Key time interval: | Chadronian | ||
| Age range of interval: | 37.00000 - 33.90000 m.y. ago |
Stratigraphy
| Geological group: | White River | Formation: | Chadron | Member: | Big Cottonwood Creek |
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: "from the 'turtle-oreodont' zone in the boundary area between the Chadron Formation and the Orellan [sic] member of the Brule Formation" (assumed to be from the Chadron because locality is "low") | |||||
Lithology and environment
| Primary lithology: | "siliciclastic" |
| Environment: | fluvial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection | ||
| Reason for describing collection: | paleoecologic analysis | ||
| Museum repositories: | FLMNH | ||
| Collectors: | D. J. Ehret, B. J. MacFadden | Collection dates: | 2001 |
Metadata
| Also known as: | FLMNH NE 008; Sand Creek Ranch | ||
| Database number: | 99593 | ||
| Authorizer: | J. Alroy, P. Holroyd | Enterer: | J. Alroy, P. Holroyd | Research group: | vertebrate |
| Created: | 2010-11-16 12:57:27 | Last modified: | 2010-11-15 19:57:27 |
| Access level: | the public | Released: | 2010-11-16 12:57:27 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 34254. | D. J. Ehret. 2007. Skeletochronology: a method for determing the individual age and growth of modern and fossil tortoises (Reptilia: Testudines). Bulletin of the Florida Museum of Natural History 47(2):49-72 [J. Alroy/J. Alroy] |
Secondary references:
| 87093 | S. J. ElShafie. 2024. Body size estimation from isolated fossil bones reveals deep time evolutionary trends in North American lizards. PLoS ONE 19(1:e0296318):1-25 [P. Holroyd/P. Holroyd/P. Holroyd] |