Polecat Creek (alluvial gravel)
Basic information
Sample name: Polecat Creek (alluvial gravel)
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: Late Pleistocene
Section: 3210
Unit number: 2
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."
Environment
Lithology: conglomerate
Taphonomic context: fluvial deposit
Habitat comments: "a layer, two or three feet in thickness, of gravel impregnated with iron oxide. Lenses of black muck containing many mollusks and fragments of wood are frequently encountered in this stratum"
Methods
Life forms: carnivores,primates,rodents,ungulates,other large mammals,other small mammals,birds,turtles
Sampling methods: quarry
Sample size: 50 specimens
Sampling comments: the "operator of the gravel pits... cooperated in saving specimens for more than ten years"
Homo sapiens, Ondatra zibethicus, Canis lupus, Procyon lotor, Ursus cf. arctos, Cervus canadensis, Cervalces scotti, Odocoileus virginianus, Bison bison, Meleagris gallopavo, Terrapene ornata, "Pseudemys", and Chrysemys are "probably" from the alluvial gravel but were not recovered in situ
wood and clams and snails are listed but not counted
Homo sapiens, Ondatra zibethicus, Canis lupus, Procyon lotor, Ursus cf. arctos, Cervus canadensis, Cervalces scotti, Odocoileus virginianus, Bison bison, Meleagris gallopavo, Terrapene ornata, "Pseudemys", and Chrysemys are "probably" from the alluvial gravel but were not recovered in situ
wood and clams and snails are listed but not counted
Metadata
Sample number: 3521
Contributor: John Alroy
Enterer: John Alroy
Created: 2019-09-11 12:20:02
Modified: 2023-04-29 01:50:36
Abundance distribution
21 species
16 singletons
total count 50
geometric series index: 125.7
Fisher's α: 13.628
geometric series k: 0.8679
Hurlbert's PIE: 0.8278
Shannon's H: 2.3668
Good's u: 0.6816
Each square represents a species. Square sizes are proportional to counts.
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Register
| Blarina brevicauda | 1 | 15.1 g |
| Sylvilagus floridanus | 1 | 1.1 kg herbivore |
| †Castoroides ohioensis | 1 | |
| Megalonyx sp. | 1 | |
| questionably referred | ||
| Canis latrans | 1 | 12 kg carnivore-insectivore |
| Canis lupus familiaris | 1 | 43 kg carnivore |
| "Canis familiaris" | ||
| †Mammut americanum | 2 | |
| Odocoileus virginianus | 17 | 75 kg herbivore |
| plus one specimen from the immediately overlying "blue clay" | ||
| Ovibovinae indet. | 1 | |
| Bison bison | 10 | 430 kg |
| Homo sapiens | 1 | 64 kg |
| Ondatra zibethicus | 3 | 1.1 kg |
| "Ondatra zibethica" | ||
| Canis lupus | 1 | 43 kg carnivore |
| Procyon lotor | 1 | 5.5 kg carnivore-granivore |
| Ursus cf. arctos | 1 | 156 kg frugivore-carnivore |
| "Ursus cf. horribilis" | ||
| Cervus canadensis | 1 | 329 kg browser-grazer |
| †Cervalces scotti | 1 | |
| "Cervalces roosevelti" | ||
| Meleagris gallopavo | 1 | 7.8 kg omnivore |
| Terrapene ornata | 1 | |
| Emydidae indet. | 2 | |
| "Pseudemys" | ||
| Chrysemys sp. | 1 | |
| questionably referred | ||