Trilobite fossil. Fossilised Isotelus sp. trilobite. This trilobite lived during the Ordovician period (around 505-440 million years ago). The trilobites are an extinct group of marine invertebrates with a hard,segmented shell that is divided into 3 sections. The Isotelus group possessed a rounded head and tail,as seen here. Most trilobites were bottom dwellers,feeding on organic sediment on the ocean floor. Many could roll themselves into a ball when threatened,ensuring that only the hard shell was exposed to attackers. Found in Morocco | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Stammers, Sinclair |
Taille de l’image : | 3557 px × 5171 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |