Assertion: porcupine | /r/CapableOf | migrate to north america
Facets:
value: during the great american interchange
type: TEMPORAL
Source sentences:
text: The porcupine is a caviomorph rodent whose ancestors rafted across the Atlantic from Africa to Brazil over 40 million years ago,[citation needed] and then migrated to North America during the Great American Interchange after the Isthmus of Panama rose 3 million years ago.