Green Locality
Basic information
Sample name: Green Locality
Sample aka: CBB-1
Reference: R. M. West and M. R. Dawson. 1973. Fossil mammals from the upper part of the Cathedral Bluffs Tongue of the Wasatch Formation ((early Bridgerian), northern Green River Basin, Wyoming. University of Wyoming Contributions to Geology 12(1):33-41 [ER 4131]
Geography
Country: United States
State: Wyoming
Coordinate: 42.56° N, -109.52° W
Coordinate basis: stated in text
Scale: outcrop
Formation: Wasatch
Time interval: Early Eocene
Zone: Bridgerian
Ma: 50.1
Age basis: AEO
Geography comments: "in SW 1/4 sec. 17, T. 30 N., R. 106 W." (West 1973, pp. 29 and 62)
a single outcrop based on West (1973, Fig. 12)
from the "upper Cathedral Bluffs Tongue" of the Wasatch Formation
interpreted as early Bridgerian
a single outcrop based on West (1973, Fig. 12)
from the "upper Cathedral Bluffs Tongue" of the Wasatch Formation
interpreted as early Bridgerian
Environment
Lithology: conglomerate
Habitat comments: "a gray-green intraformational sandy mudstone conglomerate" (West 1973, Fig. 12)
Methods
Life forms: carnivores,primates,rodents,ungulates,other small mammals
Sampling methods: screenwash
Sample size: 301 specimens
Years: 1967, 1970 - 1972
Museum: Field Museum of Natural History
Sampling comments: "the initial collection... was made in 1967. Several tons of matrix were bag- and screen-washed in 1970 and 1971, and the locality was thoroughly prospected by the 1972 field conference participants"
"Approximately 6,200 lbs. of sediment washed" (West 1973, p. 62), but this pre-dates collections reported by West and Dawson (1973)
"amphibians are not yet known... although a large number of snakes and lizards have been recovered"
an earlier faunal list with a much smaller sample size was reported by West (1973)
Pseudotomus robustus of Black and Sutton (1984) presumably replaces one of the rodent species
"Approximately 6,200 lbs. of sediment washed" (West 1973, p. 62), but this pre-dates collections reported by West and Dawson (1973)
"amphibians are not yet known... although a large number of snakes and lizards have been recovered"
an earlier faunal list with a much smaller sample size was reported by West (1973)
Pseudotomus robustus of Black and Sutton (1984) presumably replaces one of the rodent species
Metadata
Sample number: 4575
Contributor: John Alroy
Enterer: John Alroy
Modifier no: John Alroy
Created: 2024-12-07 23:24:24
Modified: 2024-12-11 10:22:32
Abundance distribution
38 species
10 singletons
total count 301
geometric series index: 66.6
Fisher's α: 11.510
geometric series k: 0.8926
Hurlbert's PIE: 0.9023
Shannon's H: 2.8774
Good's u: 0.9669
Each square represents a species. Square sizes are proportional to counts.
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