Category
page 1Hystricidae

Old World porcupine
family of mammals

Hystrix
genus of mammals

Long-tailed porcupine
species of mammal
Sivacanthion
Sivacanthion is an extinct genus of rodent from the Miocene of India.
The build of Sivacanthion is very like that of a modern Old World porcupine, although details of the anatomy suggest that it is not a direct ancestor but a side branch of Hystricidae known in the Indian sub-continent.