The stems of crinoids are composed of rounded ossicles,which often break off from the fossils. This specimen of impure Carboniferous Period limestone contains many different ossicles that became fragmented from the crinoid stems before fossilization | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Biophoto Associates |
Taille de l’image : | 5134 px × 3407 px |
Model Release : | Non requis |
Restrictions : |
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