Tetrapod by Ciro Santilli 34 Updated +Created
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The exact relationships between those clades is not very clear as there's a bunch of extinct species in the middle we are not sure exactly where they go exactly, some hypothesis are listed at: en.wikipedia.org/w/index.php?title=Tetrapod&oldid=1053601110#Temnospondyl_hypothesis_(TH)
But at least it seems rock solid that those three are actually clades.