Polecat Creek (black earth)
Basic information
Sample name: Polecat Creek (black earth)
Reference: E. C. Galbreath. 1938. Post-glacial fossil vertebrates from east-central Illinois. Geological Series of Field Museum of Natural History 6(20):303-313 [ER 3210]
Geography
Country: United States
State: Illinois
Coordinate: 39.51° N, -88.01° W
Coordinate basis: stated in text
Time interval: Holocene
Section: 3210
Unit number: 1
Unit order: above to below
Geography comments: "in the Polecat Creek gravel pits, one mile south of Ashmore in the north half of sec. 6, T. 12 N., R. 11 E."
presumably Holocene based on stratigaphic position and lack of Pleistocene fossils
presumably Holocene based on stratigaphic position and lack of Pleistocene fossils
Environment
Lithology: conglomerate
Taphonomic context: fluvial deposit
Habitat comments: "a black earth averaging two feet in depth" at the top of the section
Methods
Life forms: carnivores,ungulates
Sampling methods: quarry
Sample size: 11 specimens
Sampling comments: the "operator of the gravel pits... cooperated in saving specimens for more than ten years"
a specimen of Canis latrans "was obtained from a locality about 150 yards west of the gravel pits, probably from the black earth horizon"
a specimen of Canis latrans "was obtained from a locality about 150 yards west of the gravel pits, probably from the black earth horizon"
Metadata
Sample number: 3522
Contributor: John Alroy
Enterer: John Alroy
Created: 2019-09-11 12:28:49
Modified: 2023-04-29 01:50:39
Abundance distribution
4 species
2 singletons
total count 11
geometric series index: 10.3
Fisher's α: 2.261
geometric series k: 0.5848
Hurlbert's PIE: 0.6091
Shannon's H: 1.1622
Good's u: 0.8182
Each square represents a species. Square sizes are proportional to counts.
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Register
| Canis lupus | 1 | 43 kg carnivore |
| Lynx sp. | 1 | |
| Odocoileus virginianus | 5 | 75 kg herbivore |
| Bison bison | 4 | 430 kg |