suborder hystricomorpha

[RobertViorm]

an order of rodents including: porcupines; guinea pigs; chinchillas; etc.

[gusepinax]

Hystricomorpha is a suborder of the order Rodentia that comprises a large number of species of rodents, including porcupines, chinchillas, guinea pigs, and capybaras among others. It is characterized by a unique arrangement of the masseter (jaw muscles) and associated skull structures, allowing for more efficient gnawing. The suborder is predominantly distributed in the tropics and subtropics regions.