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. 2017 Jul 3;114(29):7606–7610. doi: 10.1073/pnas.1705540114

Fig. 3.

Fig. 3.

Slab metate (2004.8.2346.1) from substratum 5u and two-sided mano (2004.8.3474.1 and 2004.8.3474.2) from substratum 5t. Both yielded starch granules of S. jamesii and dated between 9,300 and 8,500 cal B.P. (NCS collections held at BYU Museum of Peoples and Cultures).