Anderson, J.S.; Reisz, R.R.; Scott, D.; Fröbisch, N.B.; Sumida, S.S.
range · taxonomy · topology · morphology · biogeography · ecology
Primary description of the single Gerobatrachus holotype; its proposed stem-batrachian placement is analysis-dependent and does not settle lissamphibian origins.
The sole Gerobatrachus hottoni holotype USNM 489135 combines frog-like and salamander-like characters and was recovered as a stem batrachian in the original analysis; it is neither crown Batrachia nor a demonstrated direct ancestor or global first appearance.
claim:event:kungurian-gerobatrachus-stem-batrachianGerobatrachus hottoni is known from the sole holotype USNM 489135 and was recovered as a stem batrachian in the original analysis, not as crown Batrachia or a direct ancestor.
claim:taxon:gerobatrachus:taxonomyUSNM 489135 comes from the Clear Fork Group at a named Baylor County locality in Texas; one occurrence does not establish a global distribution.
claim:taxon:gerobatrachus:biogeographyThe articulated skeleton permits functional discussion, but diet, prey choice, habitat preference and locomotor performance were not directly observed.
claim:taxon:gerobatrachus:ecologyUSNM 489135 preserves a frog-like and salamander-like character mosaic in an articulated small tetrapod skeleton.
claim:taxon:gerobatrachus:morphologyThe displayed 283.3–274.4 Ma interval is the Kungurian envelope for the sole Gerobatrachus occurrence and is not a global lissamphibian FAD.
claim:taxon:gerobatrachus:fossil-rangeThe Amphibian fossil evidence route navigation entity is source-linked only to the named specimen, dataset and analysis dossiers already cited by its range ledger. Its displayed span is a study-bounded route or sample envelope, not a biological taxon, ancestor sequence, global FAD/LAD or exact origin interval.
claim:taxon:amphibian-fossil-evidence-route