Horn from an American Bison (Bison bison). Unlike bony antlers,horns are made of the protein keratin and are permanent body structures rather than being shed each year | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Shields, Martin |
Taille de l’image : | 5019 px × 3360 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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