Class Reptilia Linnaeus, 1758 - reptiles
   Subclass Lepidosauria Duméril & Bibron, 1839
     Order Squamata Oppel, 1811
       Suborder Amphisbaenia Gray, 1844 - amphisbaenians
         1 Family Amphisbaenidae Gray, 1825 - worm lizards
         2 Family Trogonophidae Vanzolini, 1951 - shorthead worm lizards see Family Trogonophiidae Vanzolini, 1951
         3 Family Bipedidae Taylor, 1951 - two-legged worm lizards