Ammonite fossil. Ammonites were marine invertebrate molluscs that formed a spiral shell ranging in width from under 1 centimetre to over 1 metre. They first appear in the fossil record around 400 million years ago and became extinct at the end of the Cretaceous period, around 65 million years ago. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Bond, Martin |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |