Fossil/Sandstone/Shell - Fossil

This artifact is a fossil in sandstone.  There are imprints of shells, partial remains of shells and an entire shell is imbeded in stone.  This artifact was found in the vicinity of Temescal Canyon Road in Corona.
Abstract/Description: This artifact is a fossil in sandstone. There are imprints of shells, partial remains of shells and an entire shell is imbeded in stone. This artifact was found in the vicinity of Temescal Canyon Road in Corona.