holoptychiid
callipurbeckiid
opabinid
acritolepid
petalichthyid
sheepshead
pachychormiform
leptolepid
eriptychiid
macrosemiid
suborder Heterostraci
etheostomoid
dapediid
oreosomatid
Heterostraci
order Eurypterida
ophidiiform
Eurypterida
Teleostei
eugaleaspid
sea scorpion
subclass Teleostei
gyracanthid
coelacanthoid
elpistostegalian
osteostracan
plunderfish
leptolepidid
pteraspidid
paleoparadoxiid
diplocercid
neopterygian
symmoriiform
acanthodian
North American freshwater catfish
coelacanthiform
wolffish
acanthomorph
lobe-finned fish
crossopterygian
lobefin
elopocephalan
ichthyosauromorph
pholidophorid
anablepid
velvetfish
archaeostracan
euchondrocephalan
phoebodontiform
bradoriid