46895
The eocrinoids were a paraphyletic group that may have been ancestral to six other classes : Rhombifera , Diploporita , Coronoidea , Blastoidea , Parablastoidea , and Paracrinoidea .
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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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