Above Burge B: Clarendonian - Hemphillian, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Perissodactyla
- Equidae
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Neohipparion occidentale
(Leidy 1856)
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= Hippotherium sp.
Kaup 1832
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Alroy 2002 | |||||||||
| DUPLICATE REF 3564 or 3565 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Cherry |
| Coordinates: | 42.8° North, 100.8° West (view map) | ||||
| Paleocoordinates: | 43.1° North, 98.8° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | ||
| *Period: | Tertiary | *Epoch: | Miocene |
| Key time interval: | Clarendonian - Hemphillian | ||
| Age range of interval: | 12.50000 - 4.70000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Ash Hollow | Member: | Merritt Dam | ||
| Local section: | ValAH | Local bed: | 6 | ||
| Local order: | bottom to top | ||||
| Stratigraphy comments: Skinner et al. 1984 mention that the Davis ash located near the base of the Merritt Dam member is between 9~11Ma. Smith et al. then U-Pb date the Grove Lake ash beds within the Merritt Dam member to ~6.4Ma, this suggests that deposition of the Merritt Dam began in the Claredonian and throughout the Hemphillian | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | UCMP |
| Taxonomic list comments:stratigraphic position: see Skinner and Johnson 1984 p. 301 | |
Metadata
| Also known as: | UCMP V-6257 DUPLICATE REF 3564 or 3565 | ||
| Database number: | 18023 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 1994-04-30 00:00:00 | Last modified: | 2022-03-01 09:12:41 |
| Access level: | the public | Released: | 1994-04-30 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 3564. | S. D. Webb. 1969. The Burge and Minnechaduza Clarendonian Mammalian Faunas of North-Central Nebraska. University of California Publications in Geological Sciences 78:1-191 [J. Alroy/J. Alroy/J. Marcot] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
| 80386 | J. J. Smith, E. Turner, A. Möller, R. M. Joeckel, and R. E. Otto. 2018. First U-Pb zircon ages for late Miocene Ashfall Konservat-Lagerstätte and Grove Lake ashes from eastern Great Plains, USA. PLoS ONE 13(11):e0207103 [P. Mannion/G. Varnham/G. Varnham] |