| Pithocrinus cooperi Alpena Fm. Alpena, Michigan Size: 2.5 cm across the tegmen, 5.3 cm tall Very rare to see any arms attached to this crinoid species. Price: $75 US ID number: d1059 | 
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| Pithocrinus cooperi Alpena Fm. Alpena, Michigan Size: 2.5 cm across the tegmen, 5.3 cm tall Very rare to see any arms attached to this crinoid species. Price: $75 US ID number: d1059 |
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