It looks like an alien parasite come to invade our brains, but the truly bizarre creature pictured above is a mud dragon—a tiny worm, roughly half the size of a grain of rice, that squirmed about the seafloor 530 million years ago. It’s one of the first fossils of a mud dragon ever discovered, and it could help…
More than 250 million years before the first dinosaur, the most fearsome killers on Earth may have been lobsters. Yawunik kootenayi, a common ancestor to spiders, shrimp and butterflies, was a predatory "lobster-like" creature that ruled the seas half a billion years ago.
This rather bizarre organism is Coronacollina acula, which lived on the seafloor about 550 million years ago. This sponge-like creature doesn't look like much of, well, anything, but its discovery throws a whole new light on the evolution of skeletons.