12 Mile Creek Site: Holocene, Kansas
collected by C. Wood, H. T. Martin, R. T. Overton 1895
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Bovidae
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Bison antiquus
Leidy 1852
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| assigned to B. occidentalis by Lucas (1899) | ||||||||||
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Angiospermae
- Malpighiales
- Salicaceae
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Populus sp. microspore
Linnaeus 1753
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Angiospermae
- Fagales
- Fagaceae
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Quercus sp. microspore
Linnaeus 1753
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Angiospermae
- Caryophyllales
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Caryophyllales indet. microspore
Berchtold and Presl 1820
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| "Chenopodiaceae-Amaranthaceae" | ||||||||||
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Angiospermae
- Asterales
- Asteraceae
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Compositae indet. microspore
Giseke 1792
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| synonym of Asteraceae | ||||||||||
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Angiospermae
- Poales
- Poaceae
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Gramineae indet. microspore
de Jussieu
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| synonym of Poaceae | ||||||||||
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Pinopsida
- Pinales
- Pinaceae
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Pinus sp. microspore
Linnaeus 1753
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Kansas | County: | Logan |
| Coordinates: | 38.9° North, 101.0° West (view map) | ||||
| Paleocoordinates: | 38.9° North, 101.0° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | small collection |
Time
| Period: | Quaternary | Epoch: | Holocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Holocene | ||
| Age range of interval: | 0.01170 - 0.00000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: layer including the bonebed was a lens of silt "about two feet" thick in 1895 and is no longer present according to Rogers and Martin; "A bison tibia" was dated at 10,435 +/- 260 years B.P. (on apatite) and 10,245 +/- 335 years B.P. (on gelatin) "after being C-13 corrected"; this date is considered to be of Folsom age even though there is a Clovis point | |||||
Lithology and environment
| Primary lithology: | gray,blue siltstone |
| Lithology description: "blue-gray silt" | |
| Environment: | fine channel fill |
| Geology comments: "The bones of the bison may have formed a dam" in a stream channel "causing the gray silt to settle around them" | |
Taphonomy
| Modes of preservation: | body,anthropogenic |
| Degree of concentration: | -bonebed |
| Size of fossils: | macrofossils,microfossils |
| Articulated whole bodies: | many |
Collection methods and comments
| Collection methods: | chemical,hydrochloric,survey of museum collection | ||
| Reason for describing collection: | archaeological analysis | ||
| Collectors: | C. Wood, H. T. Martin, R. T. Overton | Collection dates: | 1895 |
| Collection method comments: bison fossils are at the University of Kansas Museum of Natural History; the palynoflora was taken from silt attached to the museum specimens and "extracted for analysis by disaggregation of the matrix with hydrochloric acid and sodium hexametaphophate" | |||
Metadata
| Database number: | 79625 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy | Research group: | vertebrate |
| Created: | 2008-03-14 20:49:40 | Last modified: | 2008-03-14 22:49:40 |
| Access level: | the public | Released: | 2008-03-14 20:49:40 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26728. | R. A. Rogers and L. D. Martin. 1984. The 12 Mile Creek Site: a reinvestigation. American Antiquity 49(4):757-764 [J. Alroy/J. Alroy] |