Douglass Quarry
Basic information
Sample name: Douglass Quarry

Sample aka: Crazy Mountains Basin Loc. 63

Reference: G. G. Simpson. 1937. The Fort Union of the Crazy Mountain Field, Montana, and its mammalian faunas. Bulletin of the United States National Museum 169:1-287 [ER 4101]
Geography
Country: United States

State: Montana

County: Sweetgrass

Coordinate: 46.19° N, -109.9° W
Latlng basis: stated in text

Scale: quarry

Formation: Fort Union

Time interval: Middle Palaeocene

Zone: Tiffanian

Section: CMB

Unit number: 3

Unit order: below to above

Max Ma: 62.278

Min Ma: 59.237

Age basis: paleomag

Geography comments: NW1/4, sec. 18, T. 5 N., R. 15 E.
2850 "Feet above base of Fort Union No. 1"
Ti1 according to Krause and Maas (1990)
chron 26R according to Butler et al. (1987) (age assignment based on Ogg 2020)

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Environment
Lithology: shale

Habitat comments: the lithology is not described, but "mammal localities in this area in general are "almost entirely on the rarer shale exposures... seldom as much as a hundred yards in diameter and generally much less"

Methods
Life forms: carnivores, primates, ungulates, other large mammals, other small mammals

Sampling methods: quarry

Sample size: 1565 specimens

Museum: Princeton University

Net or trap nights: 0

Basal area status: not applicable

Sampling comments: said to be a Princeton locality
the metadata for this sample are based on Simpson (1937), who did not report a faunal list, and the list is drawn from Krause and Maas (1990)

Metadata
Sample no: 4526

Contributor no: John Alroy

Enterer: John Alroy

Modifier no: John Alroy

Created: 2024-11-30 03:24:58

Modified: 2024-12-03 10:23:44

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
48 species
5 singletons
total count 1565
geometric series index: 64.1
Fisher's α: 9.367
geometric series k: 0.8804
Hurlbert's PIE: 0.8815
Shannon's H: 2.7041
Good's u: 0.9968
Register
Ptilodus sp. 1 192
Ptilodus sp. 2 19
†Mesodma pygmaea 3
Mimetodon sp. 2
?
†Neoplagiaulax hunteri 24
†Neoplagiaulax nelsoni 1
Neoplagiaulax sp. 15
said to be new
†Anconodon cochranensis 15
†Anconodon lewisi 29
†Microcosmodon woodi 3
Eucosmodontidae indet.4
apparently not the same
Peradectes pauli = †Peradectes cf. elegans 1
Acmeodon sp. 10
Palaeoryctidae indet. 12
Palaeoryctidae indet. 22
†Bisonalveus browni (bison)73
Pentacodontidae indet.18
said to be new
†Paleotomus senior 7
Propalaeosinopa diluculi = †Bessoecetor septentrionalis 32
†Myrmecoboides montanensis 2
†Prodiacodon concordiarcensis 10
†Prodiacodon furor 4
Leptictidae indet.1
apparently not the same
Proteutheria indet.2
apparently not the same
†Leptacodon munusculum 5
†Nannodectes intermedius (plesiadapiform)114
†Plesiadapis praecursor (plesiadapiform)86
Ignacius sp. 2
†Elphidotarsius russelli (plesiadapiform)8
†Picrodus silberlingi (plesiadapiform)1
Primates indet.3
apparently not the same
†Elpidophorus elegans 5
Bryanictis sp. 1
"Protictis sp." said to be new: described by Krause and Gingerich (1983) as being close to Protictis (Bryanictis) microlestes
Simpsonictis sp. 5
Dissacus sp. 5
†Litomylus dissentaneus 16
Hyopsodontidae indet.13
said to be new
†Ectocion collinus 238
†Phenacodus bisonensis 59
Claenodon montanensis = †Arctocyon montanensis 12
Claenodon sp. 7
?
†Colpoclaenus ? keeferi 5
Chriacus orthogonius = †Thryptacodon ? orthogonius 7
†Chriacus pelvidens 21
Chriacus sp. 23
apparently not the same
†Mimotricentes fremontensis 47
Thryptacodon demari = †Thryptacodon cf. orthogonius 399
Titanoides sp. 12
said to be Titanoides zeuxis by Simons 1960