Formal name for the class containing the hagfish.

Members of the class Myxini are craniates but otherwise are extremely fish, lacking in particular .

It is questionable whether class Myxini as clade contains the rest of the . Instead, the hagfish appear to be descendants of more (lamprey) -like fish.

Video (Their slime)

Video, Story (Predation by fish)

Video, Story (Predation by a mammal)