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In the early-to-mid-Cenozoic , the dominant predator forms were mammals : hyaenodonts , oxyaenids , entelodonts , ptolemaiidans , arctocyonids and mesonychians , representing a great diversity of eutherian carnivores in the northern continents and Africa .
 Africa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Africa