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Where ocean currents were strong, ancient rudist “recliners” lay unattached on...
Like the modern nautilus, this relative of modern squid hunted from inside the safe...
Rudist clams are mollusks that went extinct about 65 million years ago. They were...
Receding Ice Cover
See an animation showing over time, the receding of summer sea ice in the Arctic.
Fri, 01/07/2011 - 11:26