Is this really a coprolite? Well, we just don't know. Many times siliceous rocks such as this are sold as coprolites. However, without visible inclusions, there is just no telling whether they had fecal or geologic origins. What this particular specimen has going for it is shape (like a small cow pie) and its fossiliferous location of origin. Because of this, I currently classifying it as a dubiocoprolite.