Fossilised Jurassic ammonite of genus Orthosphinctes. This genus was to be found in the Jurassic Period (195-140 million years before present). Ammonites belong to the Class Cephalopoda,marine molluscs characterised by bilateral symmetry,distinct head and a mouth region surrounded by tentacles. The last ammonites became extinct in the Upper Cretaceous Period,about 65 million years ago. Similar creatures,but belonging to a different sub-class,may still be found today as the genus Nautilus. This fossil was found near Geisingen,Germany | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Michler, Astrid & Hans-Frieder |
Taille de l’image : | 4724 px × 3843 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |