Fossilised ray tooth plate,coloured scanning electron micrograph (SEM). Rays evolved in the Devonian period,between 416 and 359 million years ago. The hard bony plates in the mouths of rays were,and still are,used to crush open the hard shells of molluscs and crustaceans | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 2185 px × 3041 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |