Tiny clawed tracks left in ancient mud are the oldest reptile footprints

Fossilized footprints of a primitive reptile found on a slab of rock from Australia could rewrite the story of how animals evolved to live on land.

​ Fossilized footprints of a primitive reptile found on a slab of rock from Australia could rewrite the story of how animals evolved to live on land. Read More Breaking News, Latest News and Videos | CNN