What is the most primitive group of fishes and what is the defining characteristics of animals in this group?

Question

asked Jun 15, 2020 111k views

1 Answer

Grackkle · Answer 1 · 2020-06-22T07:56:55+0000

Answer:

Superclass Agnatha.

The fishes in this group don't have jaws. Their mouths are like a holes in their heads and lack of movements.

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