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The arrangement of subfamilies follows Zug et al. (2001) as reported[1]. Relative to Zaher (1999):

  • Boodontinae and Pseudoxyrhophiinae are combined in the subfamily Lamprophiinae
  • Calamariinae and Psammophiinae are included in the Colubrinae
  • Pseudoxenodontinae are included in the Natricinae
  • Dipsadinae are included in the Xenodontinae