Pratt slide
Basic information
Sample name: Pratt slide

Reference: D. Parmley and K. B. Hunter. 2010. Fossil Snakes of the Clarendonian (Late Miocene) Pratt Slide Local Fauna of Nebraska, with the Description of a New Natricine Colubrid. Journal of Herpetology 44(4):526-543 [ER 4263]
Geography
Country: United States

State: Nebraska

County: Brown

Coordinate: 42.6299° N, -100.0594° W
Latlng basis: stated in text

Time interval: Late Miocene

Max Ma: 10.5

Min Ma: 9.5

Geography comments: "located 6.5 km north of Johnstown, Brown County, north-central Nebraska; NE1/4, SW1/4 section 30. T. 3/N, R.23W"
"The age of the Pratt Slide l.f. previously has been established to be late Miocene (late Clarendonian; Voorhies, 1990; Rudnick, 1994; Korth, 1998) at approximately 10.5–9.5 Ma"

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Environment
Lithology: siliciclastic (mixed)

Taphonomic context: fluvial deposit

Habitat comments: "a stream channel deposit located 6.5 km north of Johnstown, Brown County, north-central Nebraska; NE1/4, SW1/4 section 30. T. 3/N, R.23W"

Methods
Life forms: snakes

Sample size: 412 specimens

Sampled by: Rudnick

Years: 1994

Museum: University of Nebraska State Museum (UNSM)

Net or trap nights: 0

Basal area status: not applicable

Metadata
Sample no: 4657

Contributor no: John Alroy

Enterer: Nicholas Vine

Created: 2025-02-06 03:14:59

Modified: 2025-02-06 03:14:59

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
25 species
6 singletons
total count 412
geometric series index: 48.3
Fisher's α: 5.859
geometric series k: 0.7853
Hurlbert's PIE: 0.3536
Shannon's H: 1.0633
Good's u: 0.9855
Register
†Tregophis brevirachis 3
Calamagras sp. 3
"Calamagras sp. indet. or Ogmophis sp. indet."
Erycinae indet.2
Coluber sp. 2
"or Masticophis sp. indet."
†Paracoluber storeri 2
Colubridae cf. "Opheodrys sp."1
Lampropeltis aff. getula 3
Lampropeltis triangulum 3
†Elaphe cf. kansensis 2
Elaphe sp. 6
Pituophis sp. 3
Ameiseophis robinsoni 3
Texasophis sp. 1
Paleoheterodon sp. 15
"or Heterodon sp."
Natricinae cf. "Tropidoclonion sp."1
Thamnophis sp. 12
†Micronatrix juliescottae 4
†Nerodia hillmani 6
Nerodia sp. 1
Natricinae cf. "Neonatrix infera"3
Colubridae indet.330
Viperidae cf. "Agkistrodon sp."2
Viperidae cf. "Crotalus sp."2
Sistrurus sp. 1
Viperidae indet.1