A coprolite, or piece of fossilized feces, from Vieques Island, Puerto Rico.
A coprolite, or piece of fossilized feces, from Vieques Island, Puerto Rico. Courtesy photo
A coprolite, or piece of fossilized feces, from Vieques Island, Puerto Rico. Courtesy photo

Retired Cal Poly professor uses fossilized feces to learn about ancient cultures

January 09, 2015 06:27 PM

UPDATED January 09, 2015 07:01 PM