Table 1 Direct AMS radiocarbon dates of archaeological charred soybean seeds.

From: Selection for Oil Content During Soybean Domestication Revealed by X-Ray Tomography of Ancient Beans

Sample number

Site name

Culture/Period

Radiocarbon Lab number (all Beta)

Conventional 14C age B.P.

2 Sigma calibrated (cal B.P.)

S1

Xijincheng

Tang

418894

1,230 ± 30

1,265–1,065

S2

Daxinzhuang

Shang

418904

2,940 ± 30

3,175–2,995

S3

Daxinzhuang

Shang

418900

3,040 ± 30

3,345–3,165

S4

Shenzhongji

Longshan

418895

3,530 ± 30

3,890–3,715

S5

Xijincheng

Longshan

418903

3,600 ± 30

3,980–3,835

S6

Xijincheng

Longshan

418898

3,690 ± 30

4,145–3,930

S7

Yuezhuang

Houli

418897

6,820 ± 40

7,700–7,590

  1. The half-life of 14C is 5,568 y. CT-scanned S1, S3, and S5–6 were dated. S2, S4 and S7 used both the scanned and associated soybean seeds from the same archaeological feature to enable sufficient carbon for dating.
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