After De Pinna, 1992, Nelson, 1994, and Sullivan, Lundberg & Hardman, 2006, with Recent species from Froese & Pauly, 2001 [“The FishBase”]

<==o Loricarioidea [Loricarioidei sensu Sullivan, Lundberg & Hardman, 2006] (armored, sucker-mouth and related catfishes; panssari- ja imumonnit)
   |--+--o Nematogenys Girard, 1855 [Nematogenyidae] Mioc. R. SA. ()?
   |  |  |-- †N. cuivi de las Mercedes Azpelicueta & Rubilar, 1998
   |  |  `-- N. inermis Girard, 1855
   |  `-- Trichomycteridae [Pygidiidae] (loismonnit) [36 genera, 155 species (Nelson, 1994) [185 species (Lahti et al., 1980)]]
   `--+-- Callichthyidae (panssarimonnit)
      `--+--o Scoloplax [Scoloplacidae] (kääpiöpiikkimonnit; spiny dwarf catfishes) [4]
         |  |-- S. dicra Bailey & Baskin, 1976
         |  |-- S. distolothrix Schaefer, Weitzman & Britski, 1989
         |  |-- S. dolicholophia Schaefer, Weitzman & Britski, 1989
         |  `-- S. empousa Schaefer, Weitzman & Britski, 1989 (Pantanal dwarf catfish)
         `--+-- Astroblepidae [Argidae] (Naked suckermouth catfishes) [1 genus, 53 species]
            `-- Loricariidae (armored suckermouth catfishes; imumonnit) [80 genera, 550 species]

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