Base of the evolutionary tree for Neoreptilia

• Neoreptilia (1591 species)
  • Neodiapsida → (1534 species)
    • unnamed group 981 → (1533 species)
      • unnamed group 982 → (1532 species)
        • unnamed group 987 → (1527 species)
        • Younginiformes → (5 species)
      • Lanthanolania
    • Orovenator
  • Procolophonia → (57 species)
    • unnamed group 946 → (35 species)
      • Procolophonoidea → (33 species)
        • Procolophonidae → (27 species)
        • Owenettidae → (6 species)
      • Nyctiphruretidae → (2 species)
        • Abyssomedon williamsi
        • Nyctiphruretus acudens
    • Pareiasauromorpha → (22 species)
      • Pareiasauria → (21 species)
        • unnamed group 927 → (20 species)
        • Bradysaurus seeleyi
      • Nycteroleteridae