Las Guancas (Capa 12)
Basic information
Sample name: Las Guancas (Capa 12)

Sample aka: RI-16

Reference: R. Labarca, F. Fuentes, and F. Mena. 2008. Los conjuntos faunísticos pleistocénicos de cueva Las Guanacas (Región de Aisen, Patagonia chilena): alcances taxonómicos y tafonómicos. Magallania 36(2):123-142 [ER 3386]
Geography
Country: Chile


Coordinate: 46° 15' S, 71° 59' W
Coordinate basis: stated in text

Time interval: Late Pleistocene

Section: 3386

Unit number: 4

Unit order: above to below

Min Ma: 0.013275

Age basis: radiocarbon (uncalibrated)

Geography comments: "noreste del cerro Nudo, sobre el salto del Ibâñez... una cueva de 18 mts de profundidad y 6 mts de ancho promedio"
there is an uncalibrated AMS date of 13275 +/0- 30 ybp on a horse molar from layer 10, so this is a minimum for 11 and 12 and a maximum for 9

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Environment
Lithology: ash

Taphonomic context: carnivore accumulation,cave

Habitat comments: the layers are numbered from the top down
layers 8, 10, and 12 consist of collapse layers that are apparently composed of volanic ash; layer 9 is a 10 cm-thick sand and layer 11 is a 20-cm thick silt

Methods
Life forms: carnivores,ungulates

Sampling methods: quarry

Sample size: 15 specimens

Years: 1982, 1983, 1997

Sampling comments: there are 611 Mylodon darwini osteoderms from all levels combined; these are excluded from the register

Metadata
Sample number: 3763

Contributor: John Alroy

Enterer: John Alroy

Created: 2021-06-05 16:35:25

Modified: 2023-04-29 03:40:34

Abundance distribution
3 species
1 singleton
total count 15
geometric series index: 6.4
Fisher's α: 1.128
geometric series k: 0.2887
Hurlbert's PIE: 0.2905
Shannon's H: 0.6277
Good's u: 0.9417
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Register
Camelidae indet.1
Hippidion saldiasi2
Lycalopex culpaeus128.0 kg invertivore-carnivore
"Dusicyon culpaeus"