After Carroll, 1988, Long, 1995, and Blom, Clack, Ahlberg & Friedman, 2007

Famil y-level taxonomy of all dipnomorphs

<==o †Porolepiformes Jarvik, 1942
   |--o †Porolepidae
   |  |-- †Heimenia ensis Ørvik, 1969; E.-M.Dev. Spits. EAs.
   |  `--o †Porolepis [Gyrolepis] L.-M. Dev. Eu. Spitz. NAs.
   |     |-- †P. brevis
   |     |-- †P. posnaniensis
   |     `-- †P. siegenensis Gross, 1935
   `--o †Holoptychioidea
      `--o †Holoptychidae Owen, 1860
         |?- †Ventalepis
         |?- †Duffichthys
         |--o †Glyptolepis [?Hamodus; Plyphlepis; ?Sclerolepis] M.Dev. Spits.Gr. M.-L.Dev. Eu.
         |  |-- †G. leptopterus
         |  |-- †G. groenlandica Jarvik, 1972
         |  |-- †G. baltica Gross
         |  `-- †G. paucidens
         |--o †Holoptychus [?Apedodus; ?Apendulus; ?Dendrodus; Holoptychius; Lamnodus] M.Dev. Carb. Eu. NAs. NAm. Gr. Aust. Ant.
         |  |-- †H. nobilissimus [Holoptychius]
         |  `-- †H. quebecensis
         |--o †Laccognathus Gross, 1941; L.Dev. EEu.
         |  |-- †L. panderi Gross, 1941
         |  |-- †L. grossi Vorobyeva, 2006
         |  `== two undescribed species (Vorobyeva, 2006)
         `-- †Pseudosauripterus

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