Gerobatrachus 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:taxonomyGerobatrachus hottoni
A Kungurian articulated holotype combining frog-like and salamander-like features and recovered as a stem batrachian in the original analysis.
Represented range283.3–274.4 Ma
Content packageamphibia
PBDBtxn:153288
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
USNM 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-rangeKnown limits
- A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
- A stem batrachian from the Early Permian of Texas and the origin of frogs and salamandersAnderson, J.S.; Reisz, R.R.; Scott, D.; Fröbisch, N.B.; Sumida, S.S. · 2008 · DOI 10.1038/nature06865
- Open Tree of Life web servicesOpenTreeOfLife Project
- The Paleobiology Database application programming interfacePeters, S.E.; McClennen, M. · 2016 · DOI 10.1017/pab.2015.39
- Denormalized occurrence and taxon tables of the Paleobiology DatabaseThe Paleobiology Database Community; Kocsis, Á.T. · 2026 · DOI 10.5281/zenodo.21620933