Two fossil teeth from a distant relative of North American gophers have scientists rethinking how some mammals reached the Caribbean Islands. Two fossil teeth from a distant relative of North American ...

Chattering squirrels, charming coypus, and tail-slapping beavers — along with some other rodents — have orange-brown front teeth. Researchers have published high-resolution images of rodent incisors ...

GAINESVILLE, Fla. --- Two fossil teeth from a distant relative of North American gophers have scientists rethinking how some mammals reached the Caribbean Islands. The teeth, excavated in northwest ...

Nano-sized pockets of iron material in rodents’ incisors (coypu on the left and beaver on the right) strengthen and protect the teeth. Chattering squirrels, charming coypus, and tail-slapping beavers ...