Imagine swimming in the ocean and suddenly spotting a creature larger than any shark, faster than any human can sprint, and more vicious than any predator alive today. Meet the Mosasaurus, a marine ...

For a little while, Mosasaurus maximus was my labmate. The sharp-toothed marine predator was an inoffensive neighbor, though — no doubt because only the fossilized bones, coated in beeswax to stop the ...