Crinoid calyx fossil (Platycrinites) replaced with fluorite. Mississippian Period. Cave-in-Rock,Illinois,USA | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Schneider, Mark A. |
Taille de l’image : | 4453 px × 3151 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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