The

F
i
s
h
e
s
Hagfishes
(Myxinoidea)

(Heterostraci)
-extinct-

(Astraspida)
-extinct-

(Arandaspida)
-extinct-
Lampreys
(Petromyzontiformes)

(Anaspida)
-extinct-

(Thelodonti)
-extinct-

(Galeaspida)
-extinct-

(Pituriaspida)
-extinct-
The Bony-Armored Jawless Fishes
(Osteostraci)
-extinct
Spiny Sharks
(Acanthodii)
-extinct-
Cartilaginous Fishes
(Chondrichthyes)
Bony Fishes
(Osteichthyes)