Kimberella quadrata shows mollusc-like characters in the White Sea sample, but the profile does not assign crown-Mollusca membership or direct ancestry.
claim:taxon:kimberella:taxonomyKimberella quadrata
More than 35 White Sea fossils document a bilateral benthic animal with a foot-like region and non-mineralized dorsal cover; molluscan affinity remains bounded.
Represented range558–555 Ma
Content packagemolluscs-brachiopods
PBDBtxn:151846
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 cited White Sea assemblage and does not treat it as the complete distribution of Kimberella.
claim:taxon:kimberella:biogeographyA mobile benthic feeding mode is inferred from body form and associated surfaces; diet and a radular feeding mechanism are not directly preserved.
claim:taxon:kimberella:ecologyMore than 35 specimens document a bilateral body, broad foot-like region and non-mineralized dorsal cover.
claim:taxon:kimberella:morphologyThe 558–555 Ma envelope represents the cited White Sea sample, not a global species duration or molluscan first appearance.
claim:taxon:kimberella:fossil-rangeKnown limits
- A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
- The Late Precambrian fossil Kimberella is a mollusc-like bilaterian organismFedonkin, M.A.; Waggoner, B.M. · 1997 · DOI 10.1038/42242
- 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