213491
He placed the genus in the dvinosaur family Trimerorhachidae and thought that it was intermediate between the dvinosaurs Trimerorhachis and Dvinosaurus based on the shape of the skull .
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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:
 None