Kimmswick: Late/Upper Pleistocene, Missouri
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Rodentia
- Cricetidae
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Microtus pennsylvanicus
(Ord 1815)
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Synaptomys cooperi
Baird 1858
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Mammalia
- Rodentia
- Sciuridae
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Marmota sp.
Frisch 1775
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Spermophilus sp.
Cuvier 1825
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Sciurus sp.
Linnaeus 1758
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Mammalia
- Rodentia
- Geomyidae
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Geomys sp.
Rafinesque 1817
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Mammalia
- Proboscidea
- Mammutidae
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Mammut americanum
(Kerr 1792)
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Missouri | County: | Jefferson |
| Coordinates: | 38.4° North, 90.4° West (view map) | ||||
| Paleocoordinates: | 38.4° North, 90.4° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 127 meters | ||||
| Geographic resolution: | small collection |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Late/Upper Pleistocene | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Late/Upper Pleistocene | ||
| Age range of interval: | 0.12900 - 0.01170 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: dates on bone were obtained but not reported because of "the potential for isotopic contamination" | |||||
Lithology and environment
| Primary lithology: | silty claystone |
| Lithology description: the terrace was "formed from overbank alluvium" but the fossils plus "diagnostic Clovis tools" are from two beds: "C1, bluish-gray silty clay of lower pond deposit" and "C3, olive-green silty clay of upper pond deposit" | |
| Environment: | pond |
| Glacial or sequence phase: | late glacial |
| Geology comments: "pond" deposits in an environment interpreted as a "deciduous woodland with open grassy areas" based on small mammals from this site and pollen from other sites | |
Taphonomy
| Modes of preservation: | body,anthropogenic |
| Size of fossils: | macrofossils |
| Temporal resolution: | time-averaged |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | archaeological analysis |
| Collection method comments: three "ponded basins [apparently meaning beds] have been discovered so far and excavated... All contain the remains of extinct megafauna, extant and extirpated microfauna, and artifacts"
repository, collectors, and dates are not indicated but collectors appear to include the authors | |
Metadata
| Database number: | 93676 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy | Research group: | vertebrate |
| Created: | 2010-01-27 19:17:52 | Last modified: | 2010-01-27 21:17:52 |
| Access level: | the public | Released: | 2010-01-27 19:17:52 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 31763. | R. W. Graham, C. V. Haynes, D. L. Johnson and M. Kay. 1981. Kimmswick: a Clovis-mastodon association in eastern Missouri. Science 213:1115-1117 [J. Alroy/J. Alroy] |