After documenting 4,200 corrected matrix cells and adding 56 terminal taxa, one expanded morphology analysis recovered a lepospondyl-origin tree as 9–10 steps shorter than constrained temnospondyl alternatives, while reporting generally low bootstrap support. This navigation entry is not a phylogeny or a complete taxon dossier.
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A 33-taxon, 108-character dissorophoid analysis recovered sampled lissamphibians within Amphibamiformes near Gerobatrachus, supporting a monophyletic temnospondyl-origin hypothesis while retaining polytomies, homoplasy and unresolved support.
claim:taxon:lissamphibia:temnospondyl-hypothesisAfter documenting 4,200 corrected matrix cells and adding 56 terminal taxa, one expanded morphology analysis recovered a lepospondyl-origin tree as 9–10 steps shorter than constrained temnospondyl alternatives, while reporting generally low bootstrap support.
claim:taxon:lissamphibia:lepospondyl-hypothesisThe Chinlestegophis analysis placed two Late Triassic skulls on the caecilian stem and drew stereospondyls into Lissamphibia, whereas the later Funcusvermis analysis recovered a dissorophoid gymnophionomorph stem and did not retain that stereospondyl-caecilian route.
claim:taxon:lissamphibia:stereospondyl-caecilian-hypothesisCompeting lissamphibian-origin hypotheses change which Paleozoic and Triassic fossils can bound the group, so the former 250 Ma–present composite is withheld pending a declared crown/total definition and hypothesis-specific calibration.
claim:taxon:lissamphibia:range-boundary