Olenoides serratus is the named Burgess Shale trilobite in the cited appendage comparison; its sample does not establish a direct ancestral relationship.
claim:taxon:olenoides:taxonomyOlenoides
A partly preserved upper limb branch in Olenoides serratus provides the Burgess Shale comparison for a trilobite respiratory-function test.
Represented range509–505 Ma
Content packagetrilobites-chelicerates
PBDBtxn:19629
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
This profile is limited to the cited Burgess Shale sample in British Columbia and does not establish a genus-wide distribution.
claim:taxon:olenoides:biogeographyUpper-branch morphology is consistent with a respiratory function, but gas exchange, haemolymph flow, diet and ecological guild are not directly measured.
claim:taxon:olenoides:ecologyOlenoides serratus preserves a partly articulated, filament-bearing upper limb branch with body-wall attachment used in the study's structural comparison.
claim:taxon:olenoides:morphologyOlenoides serratus is bounded here by the cited Burgess Shale sample from British Columbia, Canada; this named locality sample is not a genus-wide distribution or exact complete range.
claim:taxon:olenoidesKnown limits
- A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
- The trilobite upper limb branch is a well-developed gillHou, J.-B.; Hughes, N.C.; Hopkins, M.J. · 2021 · DOI 10.1126/sciadv.abe7377
- 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