eusthenopteron
panderichthys
acanthostega
ichthyostega
crassigyrinus
loxommatids
Caerorhachis
anthracosaurs
temnospondyls
colosteids
seymouriamorphs
amniotes
diadectomorphs
westlothiana
microsaurs
nectrideans
lysorophids
aistopods
adelogyrinids