Arroyo del Vizcaíno
Basic information
Sample name: Arroyo del Vizcaíno
Reference: R. A. Fariña, P. S. Tambusso, L. Varela, A. Czerwonogora, M. Di Giacomo, M. Musso, R. Bracco, and A. Gascue. 2013. Arroyo del Vizcaíno, Uruguay: a fossil-rich 30-ka-old megafaunal locality with cut-marked bones. Proceedings of the Royal Society B 281(1774):1-6 [ER 3790]
Geography
Country: Uruguay
Coordinate: 34° 37' 3" S, 56° 2' 33" W
Coordinate basis: stated in text
Time interval: Late Pleistocene
Max Ma: 0.0301
Min Ma: 0.027
Age basis: radiocarbon (uncalibrated)
Geography comments: radiocarbon dates range from 27 +/- 0.45 to 30.1 +/- 0.6 14C ka
Environment
Lithology: siliciclastic (mixed)
Taphonomic context: fluvial deposit,human accumulation
Archaeology: stone tools
Habitat comments: almost all specimens are from bed 2, but "some reworked elements are found in bed 3"
bed 2 fines "upwards... from a greenish muddy sandy gravel (facies a) to a brownish muddy sand (facies b)" and is "compatible with a fluvial system deposit"
"fluvial agency can be ruled out as the main source of the accumulation" and there was "fast burial, perhaps as a single event" that is interpreted as "biogenic" and "particularly human"
"40 elements... show marks that have macroscopical features consistent with human agency"
a stone "possible scraper" was found "in very close association with several bones" and there are a few other apparent lithics
despite the date of the deposit, the paper generally argues that this is a kill site (human accumulation + stone tools) although the authors do not firmly conclude this
bed 2 fines "upwards... from a greenish muddy sandy gravel (facies a) to a brownish muddy sand (facies b)" and is "compatible with a fluvial system deposit"
"fluvial agency can be ruled out as the main source of the accumulation" and there was "fast burial, perhaps as a single event" that is interpreted as "biogenic" and "particularly human"
"40 elements... show marks that have macroscopical features consistent with human agency"
a stone "possible scraper" was found "in very close association with several bones" and there are a few other apparent lithics
despite the date of the deposit, the paper generally argues that this is a kill site (human accumulation + stone tools) although the authors do not firmly conclude this
Methods
Life forms: carnivores,ungulates,other large mammals
Sampling methods: quarry
Sample size: 508 specimens
Years: 1997, 2011, 2012
Metadata
Sample number: 4120
Contributor: John Alroy
Enterer: John Alroy
Created: 2023-02-24 17:19:13
Modified: 2023-02-24 06:19:13
Abundance distribution
11 species
2 singletons
total count 508
geometric series index: 18.1
Fisher's α: 1.982
geometric series k: 0.5420
Hurlbert's PIE: 0.1865
Shannon's H: 0.5046
Good's u: 0.9961
Each square represents a species. Square sizes are proportional to counts.
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Register
| †Lestodon armatus | 457 | |
| †Mylodon darwinii | 5 | |
| †Glossotherium robustum | 3 | |
| †Glyptodon cf. clavipes | 24 | |
| †Doedicurus clavicaudatus | 1 | |
| †Panochthus tuberculatus | 1 | |
| †Toxodon platensis | 5 | |
| Notiomastodon sp. | 3 | |
| "Stegomastodon sp." | ||
| †Hippidion principale | 5 | |
| †Smilodon populator | 2 | |
| Cervidae indet. | 2 | |