Synonym: Holoptychiiformes
Parent taxon: Dipnomorpha according to J. Mondéjar‐Fernández et al. 2020
See also Dineley and Metcalf 1999, Long 2011, Moloshnikov 2007, Nelson et al. 2016, Schultze 2000 and Young et al. 1992
Sister taxa: Ceratodontae, Porolepimorpha, Powichthyidae
Subtaxa: Durialepis Hamodus Heimenia Holoptychiidae Paraglyptolepis Porolepidae Porolepis Pseudosauripterus Ventalepididae
Distribution:
• Carboniferous of the United Kingdom (1 collection)
• Givetian of Belarus (1)
• Devonian of Antarctica (1), Australia (1), Belarus (4), Belgium (2), Canada (3: Northern Territories, Northwest Territories, Quebec), Colombia (1), Estonia (8), Germany (1), Iran (1), Ireland (1), Latvia (7), Norway (1), Poland (1), the Russian Federation (3), the United Kingdom (1), United States (4: Colorado, Pennsylvania)
Total: 42 collections including 67 occurrences