54473
Nimravides is a genus of extinct saber-toothed felid s that lived in North America during the middle and late Miocene , between 13.6 and 4.9 Ma .
 North America
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 North America