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 ...
DENVER — Life on Earth got into the shell game more than 200 million years earlier than previously thought. Fossilized eukaryotes — complex life-forms that include animals and plants — discovered in ...
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