A Turtle's Shell Isn't What Most People Think It Is And the Truth Is Surprisingly Complex ...
Sometime between 5.5 and 5.6 million years ago, two shell crushers squared off in the languid currents of an ancient Florida ...
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 ...