Gustafsonia cognita is bounded by CT-reconstructed holotype cranium TMM 40209-200 from the Chambers Tuff within an approximately 38–36.6 Ma sample envelope; the interval is not a global family first appearance or direct ancestry date. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range38–36.6 Ma
Content packagecarnivora
PBDBtxn:351932
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
fossil-range · medium
Gustafsonia cognita is bounded by CT-reconstructed holotype cranium TMM 40209-200 from the Chambers Tuff within an approximately 38–36.6 Ma sample envelope; the interval is not a global family first appearance or direct ancestry date.
claim:taxon:gustafsonia:fossil-range
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.