Data related to OSL age determinations of 33 samples from the Yaoxian, Jingchuan and Huanxian sections.

<p>Data related to OSL age determinations of 33 samples from the Yaoxian, Jingchuan and Huanxian sections.</p

Information on the plants studied.

<p>Information on the plants studied.</p

Comparison of undulated patterns of silicified epidermal long cells in different parts of the upper lemmas and paleas from foxtail millet and green foxtail.

<p>Comparison of undulated patterns of silicified epidermal long cells in different parts of the upper lemmas and paleas from foxtail millet and green foxtail.</p

Classification results of discriminant analysis for ΩIII type phytolith.

<p>78.4% of foxtail millet and 76.9% of green foxtail are classified accurately.</p

Bivariate biplot of W1-3 and W2-3 values of measurements from epidermal long cells of foxtail millet and green foxtail.

<p>W1-3 = width of undulated patterns of epidermal long cells of ΩIII; W2-3 = width of epidermal long cells of ΩIII. Error bar = SD.</p

Papillae distribution on surfaces of the upper lemmas from foxtail millet and green foxtail.

<p>Papillae distribution on surfaces of the upper lemmas from foxtail millet and green foxtail.</p

Photographs of <i>Setaria</i> grains.

<p>1 = Z668, 2 = Z335, 3 = Z399, 4 = Z557, 5 = Z280, 6 = Z169, 7 = Z737, 8 = Z734, 9 = W28, 10 = Qing24, 11 = Qing68, 12 = Qing44, 13 = Qing46, 14 = Qing28, 15 = Qing7-1, 16 = Qing59.</p

Comparison of W1-3, W2-3, and H-3 of undulating patterns of epidermal long cell from all <i>S. italica</i> and <i>S. viridis</i> based on Box Plot.

<p>9 species for <i>S. italica</i> (872 data) and 7 species for <i>S. viridis</i> (607 data).</p

Data related to OSL age determinations of 33 samples from the Yaoxian, Jingchuan and Huanxian sections.

<p>Data related to OSL age determinations of 33 samples from the Yaoxian, Jingchuan and Huanxian sections.</p

Equivalent dose (De) determination for two samples, L2021 (a, b) and L2028 (c, d), using the SAR protocol.

<p>(a) and (c), decay curves of natural OSL intensity. (b) and (d), representative SAR growth curve for a single aliquot of fine-grained quartz.</p