Data from: The putative lissamphibian stem-group: phylogeny and evolution of the dissorophoid temnospondyls

Dissorophoid temnospondyls are widely considered to have given rise to
some or all modern amphibians (Lissamphibia), but their ingroup
relationships still bear major unresolved questions. An inclusive
phylogenetic analysis of dissorophoids gives new insights into the
large-scale topology of relationships. Based on a TNT 1.5 analysis (33
taxa, 108 characters), the enigmatic taxon Perryella is found to nest just
outside Dissorophoidea (phylogenetic defintion) but shares a range of
synapomorphies with this clade. The dissorophoids proper are found to
encompass a first dichotomy between the largely paedomorphic
Micromelerpetidae and all other taxa (Xerodromes). Within the latter,
there is a basal dichotomy between the large, heavily ossified
Olsoniformes (Dissorophidae + Trematopidae) and the small salamander-like
Amphibamiformes (new taxon), which include four clades: (1) Micropholidae
(Tersomius, Pasawioops, Micropholis), (2) Amphibamidae sensu stricto
(Doleserpeton, Amphibamus), Branchiosauridae (Branchiosaurus, Apateon,
Leptorophus, Schoenfelderpeton) and (4) Lissamphibia. The genera
Platyrhinops and Eoscopus are here found to nest at the base of
Amphibamiformes. Represented by their basalmost stem-taxa
(Triadobatrachus, Karaurus, Eocaecilia), lissamphibians nest with
Gerobatrachus rather than Amphibamidae as repeatedly found by former
analyses.