Class [Mammalia] Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Family Erethizontidae Bonaparte, 1845 - New World porcupines Genus Chaetomys Gray, 1843 - thin-spined "porcupine" 1 Chaetomys subspinosus (Olfers, 1818) - thin-spined porcupine