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| Stage A | Stage B | Stage C | Stage D | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | B | F | C | B | F | C | B | F | C | B | F | ||
| BF | 0 | 0 | 4 | 8 | 5 | 14 | 21 | 98 | 9 | 4 | 0 | 12 | 175 |
| RF | 4 | 0 | 8 | 7 | 18 | 10 | 7 | 93 | 5 | 8 | 0 | 4 | 164 |
| Q | 0 | 0 | 8 | 1 | 0 | 5 | 5 | 0 | 8 | 1 | 1 | 5 | 34 |
| O | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 6 | 0 | 0 | 0 | 1 | 9 |
| 4 | 0 | 21 | 16 | 24 | 29 | 33 | 197 | 22 | 13 | 1 | 22 | 382 | |
Reduction stages of attributable (C) cores, (B) blades, and (F) flakes from Shizitan 29, layer 7 Top according to raw materials: (BF) Black flint; (RF) River flint; (Q) quartz/quartzite; (O) other materials.
