Illustration of a Helicoprion,a prehistoric shark which lived 250 million years ago. Its lower jaw formed an unusual spiral of teeth,the exact placement of which has yet to be verified | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Ellis, Richard |
Bildgröße: | 4523 px × 2400 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
|