A sample of maize starch grains was recovered from four edge ground cobble tools (milling stones) (Artifact Nos. 42 with 1 grain; 26b with 2 grains; 38 with 1 grain; and 439 with 7 grains) in Zone C, Blocks 2, 3, and 1S3E (Piperno et al. 2000:894, Table 1). These artifacts are very likely associated with radiocarbon sample UCR-3417, since they are from the same levels in Zone C, and are stratigraphically below the younger sample NZA-10929. The dated material was an associated sample of phytoliths collected from the surrounding sediments.