Cog Stone, suggested date 6000-3500 BC
Milling Stone Horizon peoples; Southern California
Lim…

Cogged Stone

ClassificationsOrganic Materials-stones-worked

Culture Millingstone Horizon

Date6000-3500 BCE

Made AtCalifornia, United States, North America

MediumStone

Dimensions3 3/4 × 3 3/4 × 1 3/8 in. (9.5 × 9.5 × 3.5 cm)

Credit LineGift of the Irvine Foundation

Object number11644

DescriptionPossibly gray limestone. Scoria Conical. Edge convex. Smaller face is flat, other is slightly convex. Cogs are formed by rounded grooves. Edges of ridges unaltered not rounded, Grooves and ridges of approx. equal width. Scarred by farm machinery. Grooves are approx. .25"deep.

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