A varied trio: one slab glows with bright red-orange cell networks from iron oxides, another holds muted reddish-brown tones, and the third shows dark gray-black patterning from manganese minerals. These vibrant colorations form as groundwater chemistry deposits different trace elements into the bone, permanently replacing its original organic material — leaving no way to identify which type of dinosaur it once belonged to

3 pieces / 40.16 grams