The 516–0 Ma Hemichordata route is anchored by the approximately 516 Ma Yunotubus pterobranch sample and living Rhabdopleura observations; it is a represented-lineage span, not the phylum’s origin or a global hemichordate FAD. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range516–Present Ma
Content packageatlas-core
PBDBtxn:33518
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 516–0 Ma Hemichordata route is anchored by the approximately 516 Ma Yunotubus pterobranch sample and living Rhabdopleura observations; it is a represented-lineage span, not the phylum’s origin or a global hemichordate FAD.
claim:taxon:hemichordata:root-range
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.