Sauropodomorpha is represented by the Panphagia specimen and sampled matrix that recover it near the base of the clade; this does not identify a direct ancestor, a universal ancestral diet or an exact first appearance.
claim:taxon:sauropodomorphaAtlas home / References / A Basal Sauropodomorph (Dinosauria: Saurischia) from the Ischigualasto Formation (Triassic, Carnian) and the Early Evolution of Sauropodomorpha
References / paperA Basal Sauropodomorph (Dinosauria: Saurischia) from the Ischigualasto Formation (Triassic, Carnian) and the Early Evolution of Sauropodomorpha
Martinez, R.N.; Alcober, O.A.
Year2009
Source roleprimary-study
DOI / ID10.1371/journal.pone.0004397
Fitness and scope
taxonomy · topology · range · morphology · ecology · methods
Primary description and morphology-matrix placement of Panphagia in a sampled early sauropodomorph context.
Claim ledger
Sauropodomorpha is displayed at 231.4–225.9 Ma only as the Carnian Panphagia-bearing interval, not a global sauropodomorph first appearance. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.
claim:taxon:sauropodomorpha:source-bounded-range-rc49