References / paperA new hypothesis of dinosaur relationships and early dinosaur evolution
Baron, M.G.; Norman, D.B.; Barrett, P.M.
Year2017
Source roleprimary-study
DOI / ID10.1038/nature21700
Fitness and scope
taxonomy · topology · range · morphology · ecology · geochronology · methods
The 74-taxon, 457-character analysis recovered Ornithoscelida; this is a matrix topology, not observed ancestry.
Claim ledger
topology · contestedThe cited 457-character analysis recovers Theropoda plus Ornithischia as Ornithoscelida, whereas the published rescoring and taxon-addition test recovers the traditional topology; these are competing matrix results, not directly observed ancestry or a settled definition of Dinosauria.
claim:event:dinosaur-radiation