| Amecephalus idahoensis Spence Shale Wellsville Mountains, Utah Size: 4.3 cm. A very rare trilobite. Price: $80 US ID number: f2320 | 
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| Amecephalus idahoensis Spence Shale Wellsville Mountains, Utah Size: 4.3 cm. A very rare trilobite. Price: $80 US ID number: f2320 |
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