Incredible Extinct Creatures That Once Ruled Our Planet

The wildlife we’ve lost forever

Over 99% of all species that have ever existed on Earth are now extinct. As we confront a growing number of species currently under threat, it’s crucial to reflect on the incredible creatures we’ve already lost — some at the hands of humankind. From the gigantic land mammals of the ancient past to the smallest sea creatures lost to climate change, each entry reminds us of the urgency of conservation.