Black Hank's Canyon: Geringian, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Carnivora
- Nimravidae
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Nimravus brachyops
(Cope 1878)
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Toohey 1959 | |||||||||
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Mammalia
- Carnivora
- Canidae
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Cormocyon copei
Wang and Tedford 1992
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Mammalia
- Merycoidodontidae
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Mesoreodon megalodon
Peterson 1907
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Schultz and Falkenbach 1949 | |||||||||
| "Black Hank Canyon"; Mesoreodon does not range above Gering B according to Swisher 1982, but no Gering A or B collections are listed in this section | ||||||||||
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Megasespia middleswarti
Schultz and Falkenbach 1968
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Schultz and Falkenbach 1968 | |||||||||
| "Black Hank's Canyon" UNSM Mo-109; upper Gering | ||||||||||
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Mammalia
- Leptomerycidae
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Leptomeryx sp.
Leidy 1853
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Morrill |
| Coordinates: | 41.7° North, 103.1° West (view map) | ||||
| Paleocoordinates: | 42.5° North, 96.6° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| 10 m.y. bin: | Cenozoic 4 | ||
| *Period: | Tertiary | ||
| Key time interval: | Geringian | ||
| Age range of interval: | 29.5 - 24.7 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Gering | Member: | Unit D | ||
| Local section: | NPlat | Local bed: | 7 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: apparently the only locality in this unit apart from the "Megasespia" locality (see Gering C); based on Tedford et al. 1996, C and D are coeval facies
Scotts Bluff National Monument section appears to fall entirely in Gering D based on Swisher 1982, Loope 1986, and Tedford et al. 1987; therefore, KA 985 dated at 25.6 (= 26.27) Ma by Evernden et al. 1964 (KA on volcanic ash) falls in this unit; date rejected by Tedford et al. 1996 on reasonable paleomagnetic grounds see stratigraphic range chart in Swisher 1982 | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection excludes: | some genera |
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | UNSM |
Metadata
| Also known as: | UNSM Mo-109 | ||
| Database number: | 17474 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | B. Allen | Research group: | vertebrate |
| Created: | 2002-05-15 00:00:00 | Last modified: | 2023-07-29 04:24:20 |
| Access level: | the public | Released: | 2002-05-15 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 3386. | R. H. Tedford, C. C. Swisher, D. R. Prothero, S. A. King, and T. E. Tierney. 1996. The Whitneyan-Arikareean transition in the High Plains. In D. R. Prothero, R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 312-334 [J. Alroy/J. Alroy/M. Uhen] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
| 3065 | C. B. Schultz and C. H. Falkenbach. 1949. Promerycochoerinae, a new subfamily of oreodonts. Bulletin of the American Museum of Natural History 93(3):69-198 [J. Alroy/J. Alroy/J. Marcot] | |
| 3067 | C. B. Schultz and C. H. Falkenbach. 1954. Desmatochoerinae, a new subfamily of oreodonts. Bulletin of the American Museum of Natural History 105(2) [J. Alroy/J. Alroy/J. Ju] | |
| 3069 | C. B. Schultz and C. H. Falkenbach. 1968. The Phylogeny of the Oreodonts. Part 1: Merycoidodontinae, Eporeodontinae, and Leptaucheniinae, Three Subfamilies Of Oreodonts, With an Appendix to the Revision Of The Merycoidodontidae, and Part 2. Summary and Conclusions Concerning the Merycoidodontidae. Bulletin of the American Museum of Natural History 139:1-498 [J. Alroy/J. Alroy/J. Marcot] | |
| 3437 | L. Toohey. 1959. The species of Nimravus (Carnivora, Felidae). Bulletin of the American Museum of Natural History 118(2):71-112 [J. Alroy/J. Alroy/J. Alroy] |