Trilobite fossils. Rock containing a number of trilobite fossils (Ellipsocephalus hoffi) from the middle Cambrian period (about 515 million years ago). Trilobites are extinct hard-shelled,segmented arthropods that lived in the Earth's ancient seas. They are considered one of Earth's earliest,complex life-forms and are one of the most well-known creatures of the Palaeozoic Era. Trilobites existed between the Cambrian and Permian periods around 542-250 million years ago,and were mainly bottom-feeding,scavengers | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Stammers, Sinclair |
Bildgröße: | 5150 px × 3448 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |