Brachiopod fossil (Orbiculoidea keokuk) from the Mississippian Period,Kentucky. The blue color is from calcium phosphate. 2.5 cm long | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Schneider, Mark A. |
Taille de l’image : | 5116 px × 3418 px |
Model Release : | Non requis |
Restrictions : |
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