The Sarcopterygii navigation envelope uses the articulated Ludlow Guiyu oneiros specimen at approximately 419 Ma as its evidence-linked older anchor and living sarcopterygians at 0 Ma as its younger edge; the fossil is neither a direct ancestor nor proof of an exact global first appearance. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range419–Present Ma
Content packagetetrapod-transition
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 · high
The Sarcopterygii navigation envelope uses the articulated Ludlow Guiyu oneiros specimen at approximately 419 Ma as its evidence-linked older anchor and living sarcopterygians at 0 Ma as its younger edge; the fossil is neither a direct ancestor nor proof of an exact global first appearance.
claim:taxon:sarcopterygii:fossil-range
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.