Fig 1.
Photos of Shuidonggou locality 1 showing the profile and different excavation areas: A, landscape at SDG 1; B, a close look at the SDG 1 profile showing locations of the 1963 and 1980 trenches; C, A photo showing the labeling information from different excavation campaigns: top, 1920s (collected during the first excavation in 1923 or from the back dirt of the 1923 excavation later); middle, 1960; bottom, 1963.
Table 1.
Quantitative description of the SDG 1963 assemblage divided by raw material in Layer 8.
Fig 2.
Raw material exploitation of the SDG 1963 assemblage from Layer 8.
Fig 3.
Debitage size distribution (mm) of the SDG 1963 assemblage from Layer 8.
Table 2.
Count and frequency of core forms in the SDG 1963 assemblage from Layer 8.
Fig 4.
Examples of Levallois-unidirectional/bidirectional cores showing the initial stage and maintenance (different series of production are indicated by colors.
P: Platform; F: Flaking surface).
Fig 5.
Examples of debordant crests (1–4) and flakes (5–9) and central crests (10–13) in the assemblage from Layer 8, SDG 1963.
Fig 6.
Examples of various Levallois-unidirectional/bidirectional cores in the SDG 1963 assemblage from Layer 8 (different series of production are indicated by colors.
P: Platform; F: Flaking surface).
Table 3.
Frequency of complete blanksa divided by platform types in the SDG 1963 assemblage from Layer 8.
Fig 7.
Examples of prismatic/subprismatic cores in the SDG 1963 assemblage from Layer 8 (different series of production are indicated by colors, P: Platform; F: Flaking surface).
Fig 8.
Examples of cores combing both Levallois-unidirectional/bidirectional and prismatic/subprismatic exploitation (different series of production are indicated by colors.
P: Platform; F: Flaking surface).
Fig 9.
Examples of burin cores in the SDG 1963 assemblage from Layer 8 (different series of production are indicated by colors.
P: Platform; F: Flaking surface).
Fig 10.
Examples of various blanks in the SDG 1963 assemblage from Layer 8: 1, Levallois point; 2, Levallois flake; 3–10, 16–19, blade; 11,15, convergent flakes; 12–14, elongated flakes.
Fig 11.
Scatter plot of blade widths and lengths (including technical pieces and nearly whole blanks with a length and width ratio larger than two) in the SDG 1963 assemblage from Layer 8.
Fig 12.
Histogram of laminar blank width (including blanks smaller than 30 mm) in the SDG 1963 assemblage from Layer 8.
Table 4.
Comparison between blades and generalized flakes in the SDG 1963 assemblage from Layer 8.
Fig 13.
Examples of retouched pieces in the SDG 1963 assemblage from Layer 8: 1, single-edged scraper; 2, double-edged scraper; 3,4, convergent scrapers; 5–9, endscrapers; 10, denticulate; 11,12, points; 13, awl; 14–16, denticulated points; 17, burin.
Table 5.
Tool types a in the SDG 1963 assemblage from Layer 8.
Table 6.
Selection of blanks for retouch in the SDG 1963 assemblage from Layer 8.
Table 7.
Laminar blank production behavior at Kara Bom, Tolbor 16, Kamenka, and SDG 1.