Hey, even dinosaurs pooped. And sometimes that poop would sit around for ages without weathering, and then it eventually became stone, and then some daring paleontologists went around and picked it up so that you could have some. Certain to be the talk of your next wild party.
[Please allow for natural variations in the stones.]
- Stone: Coprolite
- Color: Opaque light brown
- Approximate size: They are poop. Use your imagination. About 1/2".