Erethizon dorsatum epixanthus Brandt 1835 (North American porcupine)
Mammalia - Rodentia - Erethizontidae
Alternative combinations: Erethizon epixanthum, Erethizon epixanthus
Belongs to Erethizon dorsatum according to C. A. Woods 1973
See also Ayer 1936 and Furlong 1904
Sister taxa: Erethizon dorsatum bruneri, Erethizon dorsatum couesi, Erethizon dorsatum dorsatum, Erethizon dorsatum myops, Erethizon dorsatum picinum
Ecology: arboreal herbivore
Distribution:
• Quaternary of United States (3: California, Texas collections)
Total: 3 collections each including a single occurrence