PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY
Trilobite fossil. Fossils of Paradoxydes sp. trilobytes. These bottom dwelling marine arthropods inhabited seas some 540 million years ago during the Cambrian period. They scavenged for food on the seabed. This rock measures 80 centimetres in length and was found in Morocco.
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