After Rage & Werner, 1999, Scanlon & Lee, 2000, Wroe, 2002, and Scanlon, 2005b, 2006b

<==o †Madtsoiidae Hoffstetter, 1961
   |?- †Rionegrophis madtsioioides
   |?- †Madtsoiidae genera et species indet. [Sudan]
   |?- †Madtsoiidae genera et species indet. [L.Cret. India] [Rage et al., 2004]
   |?- †Madtsoiidae genera et species indet. [Bolivia]
   |?- †Madtsoiidae genera et species indet. [Marocco]
   |?- †Madtsoiidae indet. cf. †Madtsoia sp. [Eocene, Australia] [Scanlon, 2005b, 2006b]
   |-- †Sanajeh indicus Wilson, Mohabey, Peters & Head, 2010; L.Cret. Ind.
   |--o †Madtsoia
   |  |-- †M. sp. aff. M. madagascariensis [Niger]
   |  |-- †M. madagascariensis
   |  |-- †M. laurasiae
   |  |-- †M. camposi Rage, 1998
   |  |-- †M. bai Simpson, 1933
   |  `-- †M. sp. cf. M. bai [Argentiina]
   |-- †Herensugae caristiorum Rage, 1996
   |--o †Alamitophis Albino, 1986; L.Cret. SA., Eoc. Aust.
   |  |-- †A. argentinus Albino, 1986
   |  |-- †A. elongatus Albino, 1994
   |  `-- †A. tingamarra Scanlon, 2005b [A. sp. cf. A. argentinus]
   |--o †Patagoniophis Albino, 1986; L.Cret. SA., Eoc. Aust.
   |  |-- †P. parvus Albino, 1986
   |  `-- †P. australiensis Scanlon, 2005b [P. sp. cf. P. parvus]
   |-- †Gigantophis garstini
   `--+--o †Yurlunggur Scanlon, 1992; M.Mio. Aust.
      |  |-- †Y. sp.1 [Australia]
      |  |-- †Y. sp.2 [Australia]
      |  |-- †Y. sp.3 [Australia]
      |  `-- †Y. camfieldensis Scanlon, 1992
      |--o †Nanowana Scanlon, 1997; L.Mio. Aust.
      |  |-- †N. godthelpi Scanlon, 1997
      |  `-- †N. schrenki
      `--o †Wonambi Smith, 1976; U.Olig.-Pleist. Aust.
         |-- †W. naracoortensis Smith, 1976 [incl. †Wonambi sp. cf. W. naracoortensis1 and †Wonambi sp. cf. W. naracoortensis2]
         `-- †W. barriei Scanlon & Lee, 2000

Special thanks to:

Dr. John Scanlon, for generous donation of reprints, concerning his research on Australian madsoiid snakes.

Reference(s):