reptiles Linnaeus 1758 [Laurin & Reisz 2020] see Class Reptilia Linnaeus, 1758
   Pan-Archosauria Gauthier 2020
     †Tanystropheidae Camp 1945 [Dilkes 1998] see Family Tanystropheidae Gervais, 1859
       Genus †Macrocnemus Nopcsa, 1931
         1 †Macrocnemus bassanii (Nopcsa, 1930)
         2.1 †Macrocnemus fuyuanensis Li et al., 2007
         2.2 †Macrocnemus obristi Fraser & Furrer, 2013