289808
Other taxonomies , e.g. Dzik ( 1981 ) include the Lituitidae in the Orthocerida partly on the basis of the subcenral siphuncle and thin connecting rings , on the misconception that Rhynchorthoceras is ancestral .
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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