The Graptolithina root display uses 516–0 Ma as a sampled envelope from diagnostic Yunotubus material in the approximately 516 Ma Hongjingshao Formation to living rhabdopleurid graptolites; it is not a graptolite origin date. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range516–Present Ma
Content packagemolluscs-brachiopods
PBDBNot linked
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
fossil-range · medium
The Graptolithina root display uses 516–0 Ma as a sampled envelope from diagnostic Yunotubus material in the approximately 516 Ma Hongjingshao Formation to living rhabdopleurid graptolites; it is not a graptolite origin date.
claim:taxon:graptolithina:root-range-rc39
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.