CAGS 01-IG-1a,b was recovered as basal Eutheria in the original matrix, while later combined analyses can move Eomaia outside Theria; neither result is ancestry.
claim:taxon:eomaia:taxonomyEomaia
Articulated holotype CAGS 01-IG-1a,b preserves skull, dentition and postcranium used in competing therian matrices and a scansorial locomotor interpretation.
Represented range125.8–124.1 Ma
Content packageother-mammals
PBDBtxn:67562
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
The profile is restricted to the Yixian Formation occurrence in Liaoning and does not establish a global eutherian or therian origin area.
claim:taxon:eomaia:biogeographyDentition and limb proportions support faunivorous and scansorial interpretations, while feeding and locomotor behaviour were not directly observed.
claim:taxon:eomaia:ecologyThe articulated holotype preserves skull, dentition, much of the postcranium, feet and claws used in anatomical and phylogenetic comparisons.
claim:taxon:eomaia:morphologyThe 125.8–124.1 Ma envelope is the Yixian sample context, not a universal therian FAD, eutherian calibration or direct specimen date.
claim:taxon:eomaia:fossil-rangeKnown limits
- A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
- The earliest known eutherian mammalJi, Q.; Luo, Z.-X.; Yuan, C.-X.; Wible, J.R.; Zhang, J.-P.; Georgi, J.A. · 2002 · DOI 10.1038/416816a
- Open Tree of Life web servicesOpenTreeOfLife Project
- The Paleobiology Database application programming interfacePeters, S.E.; McClennen, M. · 2016 · DOI 10.1017/pab.2015.39
- The placental mammal ancestor and the post–K–Pg radiation of placentalsO'Leary, M.A. et al. · 2013 · DOI 10.1126/science.1229237
- Denormalized occurrence and taxon tables of the Paleobiology DatabaseThe Paleobiology Database Community; Kocsis, Á.T. · 2026 · DOI 10.5281/zenodo.21620933