(CNN) -- Scientists have discovered the remains of a rodent the size of a small car which used to forage the South American continent. The 1-ton creature is believed to have been about 3 meters in length and 1.5 meters tall.

The giant rat's skull, which measures an impressive 53 centimeters in diameter was found by Andrés Rinderknecht and Ernesto Blanco, two scientists from Montevideo, Uruguay.

The two paleontologists stumbled upon the fossilized remains in a broken boulder in San Jose along the coast of Uruguay.

By looking at the size ratios of the skulls and bodies of existing rodents, scientists determined the bodyweight of the rodent must have approached 1,000 kilograms or a ton, making it the world's largest rodent to have been discovered to date.

The relatively small size of its teeth however, suggests it fed mainly upon soft vegetables and fruit.

Rest of story at http://edition.cnn.com/2008/TECH/science/01/16/super.rat/index.html