30185 - Well Preserved 0.62 Inch Menomonia sp Upper Cambrian Trilobite - Utah USA Echinoderms - Museum Grade Pyrite is considered the most
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30185 Well Preserved 0.62 Inch Menomonia sp Upper Cambrian Trilobite Utah USA Echinoderms Museum Grade Pyrite is considered the most Pyrite is considered the most common of the sulfide minerals Rare crocodile species