NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY
Belemnite fossils (Belemnitella minor). These specimens are from the Paramoudra Chalk formation in Norfolk, UK. Belemnites were cephalopods, the group of animals that includes squid. They appeared during the Carboniferous Period (around 350 million years ago), and went extinct towards the end of the Cretaceous Period (65 million years ago).
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