Liu, J.; Rubidge, B.S.; Li, J.
taxonomy · topology · morphology · range · biogeography · ecology
The study describes holotype IVPP V15424 and analyses 71 cranial and dental characters in PAUP; it explicitly notes the lack of reliable radiometric dates for the Dashankou sequence.
A 71-character morphology analysis of partial-snouted holotype IVPP V15424 recovered Raranimus as sister to the other sampled therapsids; the result is a matrix-dependent topology, not observed ancestry or a precise therapsid first appearance.
claim:event:raranimus-basal-therapsid-snoutIVPP 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:taxonomyThe 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-range