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" Leptomeryx " is an extinct genus of ruminant of the family Leptomerycidae , endemic to North America during the Eocene through Oligocene 38 – 24.8 Mya , existing for approximately .
 ruminant, North America
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 ruminant, North America