School Well
Basic information
Sample name: School Well

Sample aka: L6427a; L6427b

Reference: J. P. Hunter, J. H. Hartman, and D. W. Krause. 1997. Mammals and mollusks across the Cretaceous-Tertiary boundary from Makoshika State Park and vicinity (Williston Basin), Montana. Contributions to Geology, University of Wyoming 32(1):61-114 [ER 4119]
Geography
Country: United States

State: Montana

County: Dawson

Coordinate: 47.23° N, -104.74° W
Latlng basis: stated in text

Formation: Fort Union

Time interval: Early Palaeocene

Zone: Torrejonian

Age basis: paleomag

Geography comments: "on private land to the northwest of Glendive in sec. 17., T. 17 N., R. 55 E."
"from the upper parts of the Ludlow Member... approximated at about 60 m above the Hell Creek-Fort Union formational contact"
"Torrejonian"

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Environment
Lithology: sandstone

Taphonomic context: fluvial deposit

Habitat comments: "in the lowermost part of a thick channel sandstone"

Methods
Life forms: primates, ungulates, other small mammals

Excluded forms: snails

Sample size: 7 specimens

Years: 1993

Museum: Museum of the Rockies

Net or trap nights: 0

Basal area status: not applicable

Sampling comments: "discovered in 1993" by a "SUNY crew" led by Hunter
"mollusk-bearing laterally" (assumed to mean snails, not clams)

Metadata
Sample no: 4556

Contributor no: John Alroy

Enterer: John Alroy

Created: 2024-12-04 09:51:24

Modified: 2024-12-04 09:51:24

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
4 species
1 singleton
total count 7
geometric series index: 10.7
Fisher's α: 3.878
geometric series k: 1.0
Hurlbert's PIE: 0.6905
Shannon's H: 1.3518
Good's u: 0.9286
Register
†Ptilodus montanus 2
Litaletes mantiensis = †Promioclaenus cf. lemuroides 2
Periptychus sp. 1
†Paromomys maturus (plesiadapiform)2