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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Stammers, Sinclair |
Bildgröße: | 3557 px × 5171 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |