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Cryobatrachus ( from Greek , ( krýos , " cold " ) and ( batrakhos , " frog " ) ) is an extinct genus of temnospondyl amphibian from the Early Triassic of Antarctica .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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