(A) Bilancino II, starch grains from grindstone and pestle grinder. a: angular, size range 3–22 μm, hilum not evident. b: angular, size 23 μm, hilum star shaped. c: angular–compound, size range 4–32 μm, hilum not evident. d: circular–elliptic, size range 2–42 μm, hilum not evident. e: circular–elliptic, size range 13–25 μm, hilum Y shaped. f: circular–elliptic, size 24 μm; hilum X shaped. g: elliptic, size range 16–40 μm, hilum linear. h: reniform, size range 10–32 μm, hilum not evident. i: reniform, size 27 μm, hilum V shaped. (B) Kostenki 16–Uglyanka, starch grains from pestle. j: angular–compound, size 7 μm, hilum not evident. k: circular–elliptic, size range 2–37 μm, hilum not evident. (C) Pavlov VI starch grains from pestle grinder. l: angular, size range 3–15 μm, hilum not evident. m: angular, size range 11–14 μm, hilum Y shaped. n: angular, size range 6–11 μm, hilum star shaped. o: angular, size 15 μm, hilum linear. p: circular–elliptic, size range 3–30 μm, hilum not evident. q: circular–elliptic, size range 5–15 μm, hilum Y shaped. r: circular–elliptic, size range 3–17 μm, hilum X shaped. s: circular–elliptic, size range 8–10 μm, hilum star shaped. t: circular–elliptic, size range 8–18 μm, hilum linear. u: circular–elliptic, size range 4–18 μm, hilum circular.