New Dunkleosteus species and an explicit Eubrachythoraci matrix provide a documented sample nested within Arthrodira. The eubrachythoracid sample neither resolves all arthrodires nor sets the order's exact global first or last appearance. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range372.15–358.86 Ma
Content packageearly-fishes
PBDBNot linked
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
topology · medium
New Dunkleosteus species and an explicit Eubrachythoraci matrix provide a documented sample nested within Arthrodira. The eubrachythoracid sample neither resolves all arthrodires nor sets the order's exact global first or last appearance.
claim:taxon:arthrodirafossil-range · medium
Named Dunkleosteus material from the Upper Devonian formations provides a 372.15–358.86 Ma Famennian study-sample window inside Arthrodira; it does not delimit the order globally.
claim:taxon:arthrodira:range-boundary
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.