Ceratopsia is represented by a sampled morphology matrix in which the Aquilops holotype is placed among early neoceratopsians; that placement and its biogeographic implications do not identify a direct ancestor or a clade-wide first appearance. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range113–100.5 Ma
Content packagedinosauria
PBDBtxn:38842
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
topology · medium
Ceratopsia is represented by a sampled morphology matrix in which the Aquilops holotype is placed among early neoceratopsians; that placement and its biogeographic implications do not identify a direct ancestor or a clade-wide first appearance.
claim:taxon:ceratopsiafossil-range · medium
Ceratopsia is displayed at 113–100.5 Ma only as the Early Cretaceous Aquilops sample interval, not the origin or total duration of Ceratopsia. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.
claim:taxon:ceratopsia:source-bounded-range-rc49
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.