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From Smithsonian Mag:
The tightly-coiled shells of ammonites, squid-like cephalopods that died out alongside non-avian dinosaurs at the end of the Cretaceous Period, ...
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The tightly-coiled shells of ammonites, squid-like cephalopods that died out alongside non-avian dinosaurs at the end of the Cretaceous Period, ...
Continue reading...