Class Reptilia Linnaeus, 1758 - reptiles
Count: [*†*] 4o;47f; †14o;194f [5 Jan 2017]
   Subclass Anapsida Osborn, 1903 - anapsids
  Count: [*†*] 1o;11f; †1o;16f [4 Jan 2017]
     Order †Cotylosauria Cope, 1880
    Count: [†*] †7f [4 Jan 2017]
       1 Suborder †Captorhinomorpha Watson, 1917
      Count: [†*] †3f [4 Jan 2017]
       2 Suborder †Diadectomorpha Watson, 1917 see Order Diadectomorpha Watson, 1917
      Count: -
       3 Suborder †Procolophonia Seeley, 1888 see Clade Procolophonia Seeley 1888 [Laurin & Reisz 1995]
      Count: [†*] †4f [4 Jan 2017]
       4 Suborder †Promillerosauria
      Count: -