Cog Stone with Smoothed Ridges, unknown date
Milling Stone Horizon peoples; Southern Californi…

Cogged Stone

ClassificationsOrganic Materials-stones-worked

Made AtCalifornia, United States, North America

MediumLimestone

Dimensions1 1/2 x 3 1/4 in. (3.8 x 8.3 cm)

Credit LineGift of the James Irvine Foundation

Object number11652

DescriptionCylindrical. Edge convex. Both faces slightly convex. Cogs are formed by extremely shallow, rounded grooves, approximately .0625" deep and .25" to .375" wide. Ridges are approximately .5" to .75" wide and are rounded. Specimen is in nearly perfect condition. Sketch on back. 11 cogs.

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