(Eusthenopteron,(Panderichthys,(Tiktaalik,(Acanthostega,((Ossirarus,(Ossinodus,((Diploradus,(Doragnathus,(Sigournea,((Crassigyrinus,(((Eucritta,((Silvanerpeton,(Gephyrostegus,((Westlothiana,(Paleothyris,(Asaphestera,(Hyloplesion,Microbrachis)))),(Casineria,(Discosauriscus,Seymouria))))),(Eoherpeton,(Pholiderpeton,Proterogyrinus)))),(Caerorhachis,(Balanerpeton,(Dendrerpeton,(Edops,Eryops))))),(Loxomma,(Baphetes,Megalocephalus)))),(Tulerpeton,(Aytonerpeton,(Colosteus,Greererpeton))))))),(Koilops,((Pederpes,(Metaxygnathus,(Ymeria,Perittodus))),(Occidens,Whatcheeria)))))),(Ichthyostega,Ventastega))))));