Sand Draw
Basic information
Sample name: Sand Draw

Reference: P. O. McGrew. 1944. An early Pleistocene (Blancan) fauna from Nebraska. Field Museum of Natural History Geological Series 9(2):33-66 [ER 4184]
Geography
Country: United States

State: Nebraska

County: Brown

Coordinate: 42.63° N, -99.84° W
Latlng basis: stated in text

Scale: outcrop

Formation: Fullerton

Time interval: Late Pliocene

Zone: Blancan

Ma: 3.1

Age basis: AEO

Geography comments: "along the steep bank of a dry creek known locally as Sand Draw, sec. 25, T. 31 N., R. 22 W., six miles north of Ainsworth"
the exposures extend "approximately 800 yards along the draw"
the fossils are "probably" from the Fullerton Formation
said to be early Pleistocene, correlated with Broadwater, and Blancan, but late Blancan and therefore late Pliocene in modern terminology

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Environment
Lithology: siliciclastic (mixed)

Taphonomic context: fluvial deposit

Habitat comments: "few mammals" are from a "Sandy marl" but "bulk of mammals" are from an immediately underlying "Sand and clay, stream-bedded"

Methods
Life forms: carnivores, rodents, ungulates, turtles, fishes

Sample size: 48 specimens

Museum: Field Museum of Natural History

Net or trap nights: 0

Basal area status: not applicable

Sampling comments: collected "on several occasions" by Bryan Patterson and James H. Quinn, and McGrew paid "a brief visit to the locality in 1940"

Metadata
Sample no: 4648

Contributor no: John Alroy

Enterer: John Alroy

Created: 2025-01-09 05:41:34

Modified: 2025-01-09 05:41:34

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
15 species
8 singletons
total count 48
geometric series index: 45.8
Fisher's α: 7.49
geometric series k: 0.8326
Hurlbert's PIE: 0.8395
Shannon's H: 2.2009
Good's u: 0.836
Register
Ameiuridae indet.4
Emydidae indet.1
"Pseudemys sp." also compared to Trachemys, regarded as a synonym
Testudinidae indet.2
"Testudo spp."
†Geomys quinni 11
type
†Procastoroides sweeti 6
†Canis lepophagus 2
Skinner and Hibbard (1972): "Canis cf. latrans"
Trigonictis kansasensis = †Trigonictis macrodon 1
Taxidea cf. taxus (American badger)1
Machairodontinae indet.1
Skinner and Hibbard (1972): "Smilodon sp."
†Stegomastodon primitivus (gomphothere)1
Hippotigris simplicidens = †Equus simplicidens (horse)13
Platygonus sp. 1
Camelops sp. 1
†Gigantocamelus spatulus (camel)1
Skinner and Hibbard (1972): "Gigantocamelus sp."
†Capromeryx tauntonensis 2
Morgan and Morgan (1995): "Capromeryx sp."