Florida fossil porcupine solves a prickly dilemma 10 million years in the making - Phys.org
phys.orgSubmitted by physorg8953 in science
There's a longstanding debate simmering among biologists who study porcupines. There are 16 porcupine species in Central and South America, but only one in the United States and Canada. DNA evidence suggests North America's sole porcupine belongs to a group t…