Affad 23
Basic information
Sample name: Affad 23

Reference: M. Osypinska and P. Osypinski. 2016. Animal exploitation and behaviour of the latest Middle Stone Age societies in the Middle Nile Valley: archaeozoological and taphonomic analysis of Late Pleistocene fauna from the Affad Basin, Sudan. African Archaeological Review 33:107-127 [ER 3094]
Country: Sudan

Coordinate: 18° 5' N, 31° 15' E
Basis of coordinate: estimated from map
Geography comments: shown on a map at a point roughly in between Al Dabbah (183' N, 3057' E) and Korti (187' N, 3133' E) on the Nile River
there are two OSL dates of 15.9 +/- 1.75 ka and 15.1 +/- 1.66 ka, with an OSL date of 21.1 +/- 2.32 ka for an underlying calcareous silt
Climate and habitat
Lithology: sandstone
Taphonomic context: fluvial deposit, human accumulation, tools
Habitat comments: "sand and silt units... Sand bar or channel bank beach was a place of human seasonal settlement" and accumulation is inferred to have been by hunting
Levallois lithics are present
Life forms: primates, rodents, ungulates, lizards, fishes
Sampling methods: quarry, screenwash
Sample size: 985
Years: 2012 - 2014
Sampling comments: "the excavated sediments were screened (2-mm mesh size)"
numerous indeterminate remains are also listed
Sample: 3373
Contributor: John Alroy
Enterer: John Alroy
Created: 2019-08-27 13:52:49
Modified: 2019-08-27 13:52:49
Abundance distribution
10 species
1 singleton
total count 985
standardised richness: not computable
Fisher's α: 1.549
geometric series k: 0.4897
Hurlbert's PIE: 0.5532
Shannon's H: 1.1262
Good's u: 0.9990