Trilobite fossil

Numéro d’image : 11743361
Trilobite fossil
Trilobite fossil. Fossil of the trilobite Phacops circumspectans,rolled into a ball. The trilobites are an extinct group of marine arthropods with a hard,segmented shell that is divided into 3 sections. P. circumspectans occurred all over the world throughout the Silurian and Devonian periods (around 438-360 million years ago). Many trilobites could roll themselves into a ball when threatened. Assuming this position ensured that only the shell was exposed,defending the animal from attack. Most trilobites were bottom dwellers,feeding either on organic sediment or by catching their own prey. Found in Morocco
Licence : Droits gérés
Crédit: Science Photo Library / Stammers, Sinclair
Taille de l’image : 4355 px × 3092 px
Model Release : Non requis
Property Release : Non requis
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