Equus Cave (Unit 1B)
Basic information
Sample name: Equus Cave (Unit 1B)
Reference: R. G. Klein, K. Cruz-Uribe, and P. B. Beaumont. 1991. Environmental, ecological, and paleoanthropological implications of the late Pleistocene mammalian fauna from Equus Cave, northern Cape Province, South Africa. Quaternary Research 36(1):94-119 [ER 3107]
Geography
Country: South Africa
State: North West
Coordinate: 27° 37' S, 24° 37' E
Coordinate basis: stated in text
Time interval: Late Pleistocene
Section: 3107
Unit number: 2
Unit order: above to below
Max Ma: 0.103
Min Ma: 0.0327
Age basis: radiocarbon (uncalibrated)
Geography comments: "Equus Cave is located on the Gaap Escarpment at Norlim (formerly Buxton), near Taung in the northern Cape Province (now North West) of South Africa".
"Occasional artifacts of Middle Stone Age (MSA) aspect suggest that Units 1B-2B are older than 30,000-40,000 yr B.P. Organic residues extracted from bones in the upper part of 2B have been radiocarbon dated to 16,000 +/- 160 yr B.P., having likely been contaminated by younger carbon. Geomorphic evidence suggests that Units 1B-2B were deposited sometime between 103,000 and 32,700 yr B.P."
"Occasional artifacts of Middle Stone Age (MSA) aspect suggest that Units 1B-2B are older than 30,000-40,000 yr B.P. Organic residues extracted from bones in the upper part of 2B have been radiocarbon dated to 16,000 +/- 160 yr B.P., having likely been contaminated by younger carbon. Geomorphic evidence suggests that Units 1B-2B were deposited sometime between 103,000 and 32,700 yr B.P."
Environment
Lithology: sandstone
Taphonomic context: carnivore accumulation,cave
Habitat comments: "Units 1B through 2B comprise a comformable series of mainly reddish-brown, subhorizontal sandy loams with lenses of tufa grit".
"The paucity of artifacts, the absence of cut bones, hearths and other archeological features, the rarity of porcupine-gnawed bones, and the abundance of hyena coprolites imply that hyenas were the principal bone accumulators in Units 1B-2B".
"The paucity of artifacts, the absence of cut bones, hearths and other archeological features, the rarity of porcupine-gnawed bones, and the abundance of hyena coprolites imply that hyenas were the principal bone accumulators in Units 1B-2B".
Methods
Life forms: carnivores,primates,rodents,ungulates,other large mammals,other small mammals
Sampling methods: quarry
Sample size: 1829 specimens
Years: 1978, 1982
Sampling comments: "The first systematic excavations of Equus Cave took place in 1978 and were extended in 1982. A grid of squares 1 m on a side was laid down, and the excavation proceeded according to arbitrary 7.5-cm-deep levels or “spits” within four poorly defined natural stratigraphic units: lA, lB, 2A, and 2B".
Metadata
Sample number: 3394
Contributor: John Alroy
Enterer: John Alroy
Created: 2019-08-29 12:28:44
Modified: 2023-04-29 01:04:56
Abundance distribution
41 species
5 singletons
total count 1829
extrapolated richness: 52.1
Fisher's α: 7.443
geometric series k: 0.8562
Hurlbert's PIE: 0.8783
Shannon's H: 2.6689
Good's u: 0.9973
Each square represents a species. Square sizes are proportional to counts.
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