37951
In 2010 , " Saadanius " was described as a close relative of the last common ancestor of the crown catarrhines , and tentatively dated to 29 – 28 " million years ago , helping to fill an 11-million - year gap in the fossil record .
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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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