IVPP V15424 defines Raranimus dashankouensis and was recovered immediately outside the other sampled therapsids in one 71-character analysis; this profile does not present it as a direct ancestor.
claim:taxon:raranimus:taxonomyRaranimus
Holotype IVPP V15424 is a fragmentary Middle Permian snout tested in a 71-character morphology matrix; its basal-therapsid position is an analytical result, not direct ancestry.
Represented range274.4–264.28 Ma
Content packagemammal-origins
PBDBtxn:164054
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
The profile is limited to the Dashankou locality in the Xidagou Formation of Gansu and does not generalize the sample into a global Laurasian-origin conclusion.
claim:taxon:raranimus:biogeographyCranial and dental form supports a predatory dietary inference, but the partial snout does not directly preserve habitat, locomotion or feeding behaviour.
claim:taxon:raranimus:ecologyIVPP V15424 is an approximately 100 mm partial, slightly crushed snout preserving the cranial and dental characters scored in the published matrix.
claim:taxon:raranimus:morphologyThe 274.4–264.28 Ma display envelope is a broad stage translation for the Xidagou occurrence, not a direct date, global FAD, LAD or lineage duration.
claim:taxon:raranimus:fossil-rangeKnown limits
- A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
- New basal synapsid supports Laurasian origin for therapsidsLiu, J.; Rubidge, B.S.; Li, J. · 2009 · DOI 10.4202/app.2008.0071
- 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