Their exact phylogenetic relationships are disputed; previous studies found them to be the second-most basal member of the Neobatrachia, being sister to all other members of the group aside from Heleophrynidae, but more recent studies support them being significantly more derived and being the sister group to the Ranoidea.[2][4]
Sooglossoidea contains the following families:[5][6]
NasikabatrachidaeBiju and Bossuyt, 2003 - purple pignosed frogs (2 species)
Some studies suggest that the Late Cretaceous frog Indobatrachus, known from numerous fossil specimens from India, may also represent a member of the Sooglossoidea.[3]
References
^Dubois, Alain (2005). "Amphibia Mundi. 1.1. An ergotaxonomy of recent amphibians". Alytes. 23 (1–2): 1–24. INIST16956204ProQuest1319774213.