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单词 hexanchidae
释义 hex·an·chi·dae
\hekˈsaŋkəˌdē\ noun plural
Usage: capitalized
Etymology: New Latin, from Hexanchus, type genus + -idae
: a family of sharks consisting of many fossil forms and a few living forms that have one dorsal fin and a palatoquadrate which articulates with the postorbital part of the skull
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