Millions of years ago, a squidlike creature called an ammonite died with the remains of its last meal wedged between its teeth. Now, new high-tech images reveal that meal — a mini-snail and three tiny ...

They ruled the seas for 300 million years and even today are easy to find as fossils, but it’s only now that we’ve discovered what ammonites ate. It turns out these “shelled squid” relied on tiny ...