184888
Shell description In the original description ( Nomura , 1938 ) it is stated that the difference between this genus and " Egilina " and " Egila " is that the axial riblets are not fused at the upper and lower ends and that the sutures are not channeled .
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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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