Fossil hunters have uncovered the greatest rodent that ever lived -- a one-tonne behemoth that bestrode the swamplands of South America four million years ago. Read more
Tiny fossil teeth re-write rodent record The oldest rodent fossils yet found in South America have been unearthed along the Ucayali River near Contamana, Peru. The specimens comprise the tiny teeth of mouse-sized and rat-sized animals that lived at least 41 million years ago. This makes the fossi...
