Trilobite fossil. Fossilised Bathycheilus sp. trilobite. The trilobites are an extinct group of marine arthropods with a hard,segmented shell that is divided into 3 sections. The Bathycheilus group lived during the Ordovician period (around 505-440 million years ago). Most trilobites were bottom dwellers,feeding either on organic sediment or by catching prey. Many could roll themselves up into a ball when threatened. Assuming this position ensured that only the shell was exposed,defending the animal from attack. Found in Morocco | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Stammers, Sinclair |
Taille de l’image : | 2480 px × 3578 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |