Today, there is only one species of crocodile on Madagascar: the famous Nile Crocodile. But local stories about a horned-crocodile that died out hundreds of years ago, have spurred a search for its fossils.
Did you know that whales once walked the earth and crocodiles were once bipeds? Or that 95% of the bird population was wiped out in the last mass extinction? Or that elephants have grown shorter tusks to survive poachers? For generations, the histories of our planet's greatest creatures were a mystery, but thanks to new fossil finds and modern science, we're piecing it all together. Witness the surprising evolutionary stories of four remarkable creatures and the role humans may play in their next chapters.
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