Fossilised sea urchin,Cidaris sp.,from the Upper Cretaceous period (100-64 million years ago). The elongated object at upper left is one of the sea urchin's numerous spines | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Stammers, Sinclair |
Taille de l’image : | 5128 px × 3305 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |