I've had this for a while but don't recall where I got it. Someone probably gave it to me - without data as usual.
Is it one of those 'pseudocoprolites' from the Miocene Wilkes Formation of Lewis Co, Washington? Or do things like this occur elsewhere? Are there any confirmed coprolites that look like this, from any place? If not a coprolite, what is is composed of - limonite, siderite?
@GeschWhat