The 358.9–0 Ma Sauropsida route uses the Snowy Plains clawed trackway as a probable primitive-sauropsid minimum; because the trackmaker could lie near the amniote crown node, the endpoint is contested and not a body-fossil FAD or crown-birth date. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range358.9–Present Ma
Content packageatlas-core
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 · contested
The 358.9–0 Ma Sauropsida route uses the Snowy Plains clawed trackway as a probable primitive-sauropsid minimum; because the trackmaker could lie near the amniote crown node, the endpoint is contested and not a body-fossil FAD or crown-birth date.
claim:taxon:sauropsida:root-range
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.