All currently existing rodent species have ever-growing front teeth, with crowns that are continually replenished as they are ground down by gnawing, but only some species have continuously growing ...

Neoepiblemidae (Caviomorpha) includes South American hystricognath rodents that together with Chinchillidae and Dinomyidae compose the clade Chinchilloidea. Despite the considerable advance in ...

If you think you have a rodent problem in your house, just be glad it’s not this one. Scientists have discovered that the largest-known rodent to have ever roamed Earth had ferocious front teeth ...

If you liked this story, share it with other people. Unlike the over 2,000 known species of rodents, Paucidentomys vermidax lacks cheek teeth, which makes it impossible for the species to gnaw on its ...

Two new species of fossil rodent shed light on South America as an evolutionary hot spot, a new study says. Both have supertough teeth, which suggest they may have roamed the world's earliest ...

During the Pliocene period some three million years ago, there lived a bull-sized rodent in what is now South America. A new study suggests these creatures used their 11-inch (30 cm) long incisors for ...

The largest rodent that ever lived -- the size of a buffalo and weighing more than 2,000 pounds -- might have used its tusk-like front teeth for fighting, researchers suggest. The giant relative of ...