A new fossil discovered in Germany clearly shows a fish in the stomach of an amphibian in the stomach of a shark, vividly displaying the food chain of 290 million years ago. Let's recap: a fish got eaten by an amphibian, which then got eaten by shark, which then got trapped by a little landslide and preserved for future generations. Bad for them, good for us!

Nom nom nom! (Credit: Berlin Museum of Natural History.)