The brilliant iridescent hues found in ammolite come from tiny air gaps in the fossils’ layers, a new study finds. By Alexa Robles-Gil Millions of years ago, squid-like creatures called ammonites swam ...
Fossil shell of Pithocerithium rubiginosum (height is 1.5 cm) from the Miocene sediments of Nexing in Austria (left) and isolated reddish polyene pigments on calcium fluoride disc (diameter of disc is ...
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