Lost Chicken Creek (Purdy Collection): Late/Upper Pleistocene, Alaska
collected by B. Purdy 1974
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Proboscidea
- Elephantidae
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Mammuthus primigenius
(Blumenbach 1799)
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Mammalia
- Perissodactyla
- Equidae
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Equus (Asinus) lambei
Hay 1917
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synonym of Equus niobrarensis alaskae | ||||||||||
(6 measurements) | ||||||||||
Equus (Asinus) cf. kiang
(Moorcroft 1841)
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Mammalia
- Cervidae
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Cervus elaphus
Linnaeus 1758
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Rangifer tarandus
(Linnaeus 1758)
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Mammalia
- Bovidae
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Ovis ? dalli
Nelson 1884
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Symbos cavifrons
(Leidy 1852)
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synonym of Bootherium bombifrons | ||||||||||
Bison crassicornis
Richardson 1854
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synonym of Bison priscus | ||||||||||
(8 measurements) | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Alaska |
Coordinates: | 64.1° North, 141.9° West (view map) | ||
Paleocoordinates: | 64.0° North, 141.9° West | ||
Basis of coordinate: | stated in text | ||
Geographic resolution: | small collection |
Time
Period: | Quaternary | Epoch: | Pleistocene |
10 m.y. bin: | Cenozoic 6 | ||
Key time interval: | Late/Upper Pleistocene | ||
Age range of interval: | 0.12600 - 0.01170 m.y. ago | ||
Age estimate: | 20500 ± 390 to 10050 ± 150 YBP (14C) |
Stratigraphy
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: "late Wisconsin" with bone collagen radiocarbon dates of "26 760 +/- 300 years BP" (Equus sp., specimen collected in 1965 somewhere in the area but apparently not at the site), "20 500 +/- 390 years BP" (Symbos cavifrons), "10370 +/- 160 years BP" (bison tibia), and "10050 +/- 150 years BP" (Cervus elaphus) |
Lithology and environment
Primary lithology: | black unlithified carbonaceous siltstone |
Lithology description: "a section exposed at the margin" of the nearby sluice pond includes "2.4-3.7 m of frozen black organic silt or 'muck" overlain by silt, and "Presumably, most of the mammal fossils are derived from near the bse of the frozen muck" | |
Environment: | "floodplain" |
Glacial or sequence phase: | late glacial |
Geology comments: "The relatively great spread of dates could be accounted for by massive downslope movement of mammalian remains [during early postglacial time] from the higher, former steppe-like areas where they were deposited throughout the late Wisconsin" |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Feeding/predation traces: | fractures |
Spatial resolution: | allochthonous |
Collection methods and comments
Collection methods: | selective quarrying,survey of museum collection | ||
Reason for describing collection: | general faunal/floral analysis | ||
Collectors: | B. Purdy | Collection dates: | 1974 |
Collection method comments: "Pleistocene mammal bones have been washed out of the sediments... for many years and were picked up occasionally by local collectors" but this material apparently was "donated to the National Museums of Canada by Barbara Purdy" and apparently "excavated" in part or whole in 1974 collection | |||
Taxonomic list comments:a different collection from Lost Chicken Creek but apparently not from one site was described by Whitmore and Foster (1967) |
Metadata
Database number: | 93555 | ||
Authorizer: | J. Alroy | Enterer: | J. Alroy |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 2010-01-24 12:08:50 | Last modified: | 2010-01-24 14:10:38 |
Access level: | the public | Released: | 2010-01-24 12:08:50 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
31685. | C. R. Harington. 1980. Pleistocene mammals from Lost Chicken Creek, Alaska. Canadian Journal of Earth Sciences 17(2):168-198 [J. Alroy/J. Alroy/J. Ju] |