There are millions of different types of living things on Earth. In order to keep track of them all, scientists put living things into groups based on characteristics that they have that are the same.

Sir David Attenborough at the Beijing Museum of Natural History with fossil of Juramaia, as featured in the Smithsonian Channel series Rise of Animals: Triumph of the Vertebrates. Famed British ...

David Attenborough embarks on an epic 500-million-year journey to unravel the incredible rise of the vertebrates. He presents explosive new fossil evidence from a region he’s long dreamt of exploring ...

David Attenborough continues his journey in China to chart the rise of the animals that dominate our world today – the vertebrates. In this episode, he reveals the fascinating story of the mammals, ...