Ancient giant tortoise fossils found in Colombian Andes

Paleontologists have discovered giant tortoise fossils in Colombia dating back some 57 million years, the university leading the excavation said, with the findings key to understanding South America's prehistoric eras.

These giant, prehistoric salmon had tusk-like teeth

Oncorhynchus rastrosus, a giant species of salmon that lived in the North American Pacific Northwest a few million years ago, sported a pair of front teeth that projected out from the sides of its mouth like tusks, according ...