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]
Country: United States
State: Illinois

Coordinate: 39.51° N, -88.01° W
Basis of coordinate: stated in text
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."
Climate and habitat
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"
Life forms: carnivores, primates, rodents, ungulates, other large mammals, other small mammals, birds, turtles
Sampling methods: quarry
Sample size: 50
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
Sample: 3521
Contributor: John Alroy
Enterer: John Alroy
Created: 2019-09-11 12:20:02
Modified: 2019-09-11 12:20:02
Abundance distribution
21 species
16 singletons
total count 50
extrapolated richness: 115.8
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.
Blarina brevicauda115.1 g
Sylvilagus floridanus11.1 kg herbivore
Castoroides ohioensis1
Megalonyx sp.1
questionably referred
Canis latrans112 kg carnivore-insectivore
Canis lupus familiaris143 kg carnivore
"Canis familiaris"
Mammut americanum2
Odocoileus virginianus1775 kg herbivore
plus one specimen from the immediately overlying "blue clay"
Ovibovinae indet.1
Bison bison10430 kg
Homo sapiens164 kg
Ondatra zibethicus31.1 kg
"Ondatra zibethica"
Canis lupus143 kg carnivore
Procyon lotor15.5 kg carnivore-granivore
Ursus cf. arctos1156 kg frugivore-carnivore
"Ursus cf. horribilis"
Cervus canadensis1329 kg browser-grazer
Cervalces scotti1
"Cervalces roosevelti"
Meleagris gallopavo17.8 kg omnivore
Terrapene ornata1
Emydidae indet.2
Chrysemys sp.1
questionably referred