Theropoda Marsh 1881 [Gauthier 1986] see Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
   Neotheropoda Bakker 1986 [Sereno 1998]
     Averostra Paul 2002
       Tetanurae Gauthier 1986
         Orionides Carrano, Benson & Sampson 2012
           Avetheropoda Paul 1988 [Padian et al. 1999]
             †Allosauroidea Marsh, 1878
               †Metriacanthosauridae Paul, 1988
                 †Metriacanthosaurinae Paul, 1988
                   Genus †Metriacanthosaurus Walker, 1964
                     †Metriacanthosaurus walkeri Carrano, Benson & Sampson, 2012, nom. null. see Metriacanthosaurus parkeri (Huene, 1923)