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Due to such a wide range of variation , it has been suggested that the ancient " H. rudolfensis " and " H. habilis " should be considered early varieties of " H. erectus " .
 H. rudolfensis
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:
 H. rudolfensis