Are any of these animals still around today? Complex life has existed on earth for just over half a billion years, and in all that time the planet has seen some terrifying, weird, and incredible ...

Paleoartist Roman Uchytel has created a gallery of size-comparison images that highlight the radical evolutionary journey that modern day animals have undergone when compared to their long-extinct ...

This reptile size comparison shows just how dramatically these animals can vary, from tiny turtles that fit easily in your hands to large alligators with powerful bodies and jaws. Seeing them side by ...