Subclass Avialae Gauthier, 1986 see Clade Avialae Gauthier 1986 Count: [o] 31o;113f; ‡2o;6f; †11o;14f Infraclass Aves Linnaeus, 1758 see Subclass Aves Linnaeus, 1758 Count: [o] 31o;113f; ‡2o;6f; †11o;14f Parvclass †Palaeoaves Livezey & Zusi, 2007 see Class Aves Linnaeus, 1758 Count: [†f] †4o;4f Superorder †Euenantiornithes Chiappe, 2002 Count: [†f] †2o;2f 1 Order †Rahonaviformes B.C. Livezey & R.L. Zusi, 2007 see Cohort Deinonychosauria Colbert & Russell, 1969 Count: [†f] †1f 2 Order †Apsaraviformes Livezey & Zusi, 2007 Count: [†f] †1f