Yanlidong (Late Stage)
Basic information
Sample name: Yanlidong (Late Stage)
Sample aka: YLD
Reference: Y. Yao, W. Liao, C. J. Bae, X. Sun, Y. Feng, C. Tian, J. Li, S. Wei, and W. Wang. 2020. New discovery of Late Pleistocene modern human teeth from Chongzuo, Guangxi, southern China. Quaternary International 563:5-12 [ER 3867]
Geography
Country: China
State: Guangxi
Coordinate: 22° 33' 57" N, 107° 19' 32" E
Coordinate basis: stated in text
Time interval: Late Pleistocene
Max Ma: 0.065
Min Ma: 0.0297
Age basis: OSL
Geography comments: "in Xinhe Town of Chongzuo City"
there are U/Th dates of 168.1 +/- 1.1 and 186.1 +/- 1.7 ka on "soda straw stalactites" that provide a maximum age because the stalactites "are thought be precipitated prior to their deposition"
the authors instead favour OSL dates of 29.7 +/- 2.2 and 65.0 +/- 8.1 ka on Late Stage "sediment samples"
there are U/Th dates of 168.1 +/- 1.1 and 186.1 +/- 1.7 ka on "soda straw stalactites" that provide a maximum age because the stalactites "are thought be precipitated prior to their deposition"
the authors instead favour OSL dates of 29.7 +/- 2.2 and 65.0 +/- 8.1 ka on Late Stage "sediment samples"
Environment
Lithology: claystone
Taphonomic context: cave
Habitat comments: the "Early Stage" comes from "a set of light brown calcitic cemented sandy clay" and the "Late Stage"comes from an upper layer "composed of brown silty clay" and a lower layer "comprised of brown sandy clay"
human artefacts are not present and the accumulation agent is not discussed
human artefacts are not present and the accumulation agent is not discussed
Methods
Life forms: carnivores,primates,rodents,ungulates
Sampling methods: quarry,screenwash
Sample size: 568 specimens
Years: 2016, 2017
Sampling comments: the cave was discovered in 2016 and a test excavation was carried out in 2017, at which point previously disturbed and excavated sediments were dry-sieved
149 teeth are from the excavation and 632 from the disturbed sediment
149 teeth are from the excavation and 632 from the disturbed sediment
Metadata
Sample number: 4242
Contributor: John Alroy
Enterer: John Alroy
Created: 2023-04-22 11:05:24
Modified: 2023-04-22 01:05:24
Abundance distribution
14 species
3 singletons
total count 568
extrapolated richness: 20.0
Fisher's α: 2.596
geometric series k: 0.6838
Hurlbert's PIE: 0.8041
Shannon's H: 1.8305
Good's u: 0.9947
Each square represents a species. Square sizes are proportional to counts.
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Register
| Homo sapiens | 3 | 64 kg |
| Pongo weidenreichi | 36 | |
| "Pongo pygmaeus weidenreichi": listed as Pongo sp. in the table | ||
| Hylobates sp. | 1 | |
| Macaca sp. | 80 | |
| Hystrix brachyura subcristata | 140 | |
| "Hystrix subcristata": plus 33 indeterminate rodents | ||
| Stegodon orientalis | 1 | |
| Elephas maximus | 3 | 3711 kg grazer-browser |
| Ursus thibetanus | 6 | 63 kg browser-frugivore |
| Arctonyx collaris | 9 | invertivore |
| plus 64 indeterminate carnivores | ||
| Rhinoceros sinensis | 13 | |
| listed as Rhinoceros sp. in the table | ||
| Tapirus augustus | 1 | |
| "Megatapirus augustus" | ||
| Sus scrofa | 129 | 54 kg herbivore |
| Cervus sp. | 137 | |
| plus 10 indeterminate cervids | ||
| Bovidae indet. | 9 | |
| presumably including Megalovis sp., which is omitted from the table | ||