ɪn tˈuː θˈaʊzənd ɪlˈɛvən, dˌɪnəsˈɔːɹəmˌoːɹfə wʌz ɹˌiːdᵻfˈaɪnd baɪ stˈɜːlɪŋ nˈɛsbɪt təbi ɐ bɹˈæntʃbˈeɪst klˈeɪd, dᵻfˈaɪnd baɪ ɪŋklˈuːdɪŋ ɹˈɛptaɪlz klˈoʊsɚ tə wˈʌn ɡɹˈuːp ðɐn tʊ ɐnˈʌðɚ.
In 2011, Dinosauromorpha was redefined by Sterling Nesbitt to be a branch-based clade, defined by including reptiles closer to one group than to another.