MARTIN LAND / SCIENCE PHOTO LIBRARY MARTIN LAND / SCIENCE PHOTO LIBRARY
Assortment of fossilized ammonites, Amoeboceras sp. (coiled) and bivalves Protocardia sp. The specimen is from the Oxfordian Jurassic period, approximately 160 million years old. Ammonites are coiled extinct molluscs belonging to the class of Cephalopoda.
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