| Eldredgeops milleri Silica Shale Milan, Michigasn Size: About 1.6 cm. across the cephalon This is the rarer of the two species that occurs in this formation. Price: $20 US ID number: f2236 | 
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| Eldredgeops milleri Silica Shale Milan, Michigasn Size: About 1.6 cm. across the cephalon This is the rarer of the two species that occurs in this formation. Price: $20 US ID number: f2236 |
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