Yicaris dianensis was interpreted near crown Eucrustacea from sampled appendage characters; that placement is not direct ancestry or a crown-origin date.
claim:taxon:yicaris:taxonomyYicaris dianensis
Phosphatized individuals from several growth stages preserve exites and eucrustacean-like limb organization without fixing a crown-origin date.
Represented range521–514 Ma
Content packagecrustaceans-insects
PBDBtxn:473019
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 Chiungchussu Formation sample in Yunnan and does not establish a global range.
claim:taxon:yicaris:biogeographyThe developmental material does not directly preserve diet, habitat preference or locomotor performance.
claim:taxon:yicaris:ecologyPhosphatized individuals from multiple growth stages preserve leaf-shaped exites and eucrustacean-like limb organization.
claim:taxon:yicaris:morphologyThe 521–514 Ma interval is a broad formation context for the developmental sample, not a global species duration or eucrustacean FAD.
claim:taxon:yicaris:fossil-rangeKnown limits
- A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
- An epipodite-bearing crown-group crustacean from the Lower CambrianZhang, X.-G.; Siveter, D.J.; Waloszek, D.; Maas, A. · 2007 · DOI 10.1038/nature06138
- 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