<==o BOIDEA (boansukuiset käärmeet)
   |?-o †?Palaeophidae
   |  |-- †Archaeophis
   |  |-- †Palaeophis [Dinophis, Titanophis]
   |  `-- †Pterophenus
   `--o Boidae (boat)
      |--o Erycinae (hietaboakäärmeet)
      |  |?- †Calamagras Cope, 1873
      |  |?- †Ogmophis Lambe
      |  |--+-- †Bransateryx Szyndlar, 1987
      |  |  `-- Charina
      |  `--+-- Eryx
      |     `-- Gongylophis Wagler, 1830
      `--+--o Pythoninae (pythonit)
         |  |-- Python [Pythoninae]
         |  `--o Morellinae
         |     |-- Aspidites
         |     `-- Morelia
         `--o Boinae (boakäärmeet)
            |?- Boavus
            |--o Boini
            |  |-- Acrantophis
            |  |-- Boa
            |  |-- Sanzinia
            |  `-- Xenoboa
            `--o Corallini
               |-- Candoia
               |-- Corallus
               |-- Epicrates
               `-- Eunectes


Reference(s):

    Scanlon, J. D., & Lee, M. S. Y., 2000: The pleistocene serpent Wonambi
and the early evolution of snakes.
–Nature: Vol. 403, 27 January, pp. 416-420

    Szyndlar, Z., 1987: Snakes from the Lower Miocene locality of Dolnice (Czechoslovakia).
–Journal of Vertebrate Paleontology: Vol. 7, #1, pp. 55-71