FISH

The groups that represent what we call fish are in green.

D
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Sea cucumbers, sea urchins...
I
I
I
I
I
I
I
I
––I
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Hemichordata
Acorn worms & pterobranchs
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C
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r
d
a
t
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Tunicates
I
I
I
I
I
I
––I

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Cephalocordata
Amphioxus
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C
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n
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t
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Myxini
Hagfishes
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V
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r
t
e
b
r
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t
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Petromyzontiformes
Lampreys
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Gnatostoma
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Sharks and rays
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Osteichtyes
––– Sarcopterygii
I
I
I
––I

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Coelacanthimorpha
Coelacanths
I
I
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I
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Dipnoi
Lungfish
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Tetrapoda
Amphibians, reptiles, mammals...
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Ray-finned fish