I don't see any peck marks or ground areas though. if this is an Indian artifact, I would expect to see some peck marks and areas of grinding/smoothing. I do see depressions in the stone, and some areas which appear flat but not the type I would expect.
Instead of peck marks it appears to have small holes where material weathered out.
Do you see any marks under magnification in the areas of the arrows?
From the 1st image it appears to be about 4 inches in length, which as effigies go would be pretty good size in my opinion.
has any other relics been found close to the area this was found?