ectothermic vertebrates Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Class Reptilia Linnaeus, 1758 - reptiles
     1 Order Crocodyliformes Clark, 1988 see Clade Crocodyliformes Clark 1988 [Sereno, Larsson, Sidor & Gado 2001]
     2 Order Squamata Oppel, 1811