Researchers analyzed 200 fossil teeth from ancient mammals in China, revealing how they adapted and diversified after the mass extinction ...

Learn more about what fossilized teeth can tell us about the rise of mammals after the extinction of dinosaurs.

An analysis of fossil teeth from mammals that lived in China following the most recent major mass extinction suggests size came before both shape and function as diets diversified.

If you think that rodents are typically tiny in size and that beavers are gigantic when compared to other members of the rodent family, then perhaps you haven’t yet met the largest rodent of them all ...

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

Tiny fossil teeth from Alaska are changing how scientists view mammal life and migration in the ancient Arctic.

Rats and other rodents have front teeth that grow continuously, so they gnaw to keep them healthy and in shape. Himanshu Sharma / Anadolu via Getty Images Beavers are famous for nibbling away at trees ...

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 ...