Mitogenomes representing all three living chimaeriform families provide a sampled topology and molecular divergence estimates. The living sample and clock model do not directly date total-group Holocephali or establish its fossil endpoints. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range421–Present Ma
Content packagechondrichthyes
PBDBtxn:34760
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
topology · medium
Mitogenomes representing all three living chimaeriform families provide a sampled topology and molecular divergence estimates. The living sample and clock model do not directly date total-group Holocephali or establish its fossil endpoints.
claim:taxon:holocephalidivergence-time · medium
The mitogenomic clock estimated the lineage leading to modern holocephalans at 421 Ma (95% credible interval 410–447 Ma), supporting a model-to-present window rather than a fossil FAD.
claim:taxon:holocephali:range-boundary
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.