Early Earth
In 2004, paleontologists digging in the Canadian Arctic unearthed the fossil of a 375-million-year-old creature named Tiktaalik that possessed both the scales of a fish and the sturdy, jointed limb bones of a land animal—and this single, perfect transitional fossil bridged the evolutionary gap between water and land, showing the exact moment our distant ancestors began to crawl out of the sea.
By Space Daily Editorial Team · Jun 10, 2026