Ammonites (Ammonitida) were shelled cephalopod molluscs that lived throughout the world’s oceans during the Mesozoic (Triassic, Jurassic and Cretaceous periods).
Fossil found on shoreline at Chapmans Pool, Dorset, England.
Lens: Ricoh XR Rikenon 50mm F/2 S plus extension tubes.
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