Serious fossil collectors have a minimum of several of these Coprolite specimens in their collections. A fossil is defined as any traces or remains of life in the past. Coprolites fit perfectly into this definition. The original material has been replaced molecule by molecule with minerals to form into an agate. This 'poop' has been polished into a beautiful piece with a near glass like finish. These are very popular (or is it 'poopular'?) with adults and kids.
The measurements are:
Weight - 1.5 ounces
Length - 1.75 inches
Width - 1.25 inches
Thickness - 5/8 inch