Hex·an·chus | \hekˈsaŋkəs\

Definition of Hexanchus 

: the type genus of the family Hexanchidae sometimes considered to include all living members of the family but sometimes restricted to those with six pairs of branchial clefts

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History and Etymology for Hexanchus

New Latin, from hexa- + anchus (probably from Greek anchein to strangle)

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