Compare temnospondyl, lepospondyl and stereospondyl-caecilian matrices without turning any sampled topology into a settled ancestor tree.
Each step names its evidence claims, with references below. Interactive Explorer states are available in the full application; the narrative remains an editorial synthesis.
Schoch’s dissorophoid matrix places sampled lissamphibians within Amphibamiformes near Gerobatrachus, while low support and alternative matrices remain visible.
This is a sampled morphology topology, not an observed ancestor or consensus origin.
claim:taxon:lissamphibia:temnospondyl-hypothesisMarjanović and Laurin’s corrected and expanded matrix makes the lepospondyl route shorter under their analyses, but bootstrap support is generally low and other matrices disagree.
Parsimony step difference is analysis-specific and is not translated into probability or consensus.
claim:taxon:lissamphibia:lepospondyl-hypothesisChinlestegophis linked caecilians to stereospondyls in one analysis; broader Funcusvermis sampling instead recovered a dissorophoid caecilian stem.
The conflict is retained as two published results rather than resolved editorially.
claim:taxon:lissamphibia:stereospondyl-caecilian-hypothesis