| Gennaeocrinus mourantae Arkona Fm. Arkona, Ontario, Canada Size: 2.4 cm crown. . An attached Platyceras is on the back side. This is a highly sought for crinoid that rarely comes on the market. Price: $ US ID number: d1068 | 
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| Gennaeocrinus mourantae Arkona Fm. Arkona, Ontario, Canada Size: 2.4 cm crown. . An attached Platyceras is on the back side. This is a highly sought for crinoid that rarely comes on the market. Price: $ US ID number: d1068 |
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