USNM locality no. 41270
Basic information
Sample name: USNM locality no. 41270

Reference: P. Wilf. 2000. Late Paleocene-early Eocene climate changes in southwestern Wyoming: Paleobotanical analysis. Geological Society of America Bulletin 112(2):292-307 [ER 4412]
Geography
Country: United States

State: Wyoming

County: Sweetwater

Coordinate: 41.518° N, -109.448° W
Latlng basis: based on nearby landmark

Scale: quarry

Time interval: Late Palaeocene

Ma: 57.101

Age basis: paleomag

Geography comments: early Clarkforkian (Cf1), which straddles the C24r/C25n transition according to Secord et al. (2006) (age is the boundary according to Ogg 2020)
in the general area of Big Multi Quarry (Wilf et al. 1998), which is near Bitter Creek (basis of coordinate)

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Environment
Lithology: siliciclastic (mixed)

Habitat comments: either from a carbonaceous shale or a carbonaceous siltstone based on Wilf et al. (1998, Fig. 3)

Methods
Life forms: leaves

Sample size: 972 specimens

Museum: USNM

Basal area status: not applicable

Metadata
Sample no: 4694

Contributor no: John Alroy

Enterer: John Alroy

Modifier no: John Alroy

Created: 2025-11-16 11:33:33

Modified: 2025-11-21 01:49:07

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
10 species
3 singletons
total count 972
geometric series index: 15.3
Fisher's α: 1.553
geometric series k: 0.5015
Hurlbert's PIE: 0.6044
Shannon's H: 1.1761
Good's u: 0.9969
Register
Corylites sp. 498
Persites argutus 31
Ampelopsis acerifolia 349
Ocotea sp. 27
aff.
Magnoliaceae indet.32
Cornus hyperborea 29
Carya antiquorum 1
Ternstroemerites aureavallis 1
Cercidiphyllaceae indet.1
Viburnum aff. antiquum 3