Osteichthyes - Dipnomorpha - Holoptychiidae
Alternative spelling: Holoptychidae
Synonym: Cyclodipterini
Full reference: R. Owen. 1859. Palaeontology. The Encyclopaedia Brittanica, or Dictionary of Arts, Sciences, and General Literature (8th Edition) 17:91-176
Parent taxon: Porolepiformes according to J. Mondéjar‐Fernández et al. 2020
See also Cope 1887, Hay 1902, Jordan 1963, Moloshnikov 2007, Nelson et al. 2016, Owen 1859, Schultze 2000 and Woodward 1891
Sister taxa: Durialepis, Hamodus, Heimenia, Paraglyptolepis, Porolepidae, Porolepis, Pseudosauripterus, Ventalepididae
Subtaxa: Apedodus Duffichthys Glyptolepis Holoptychius Laccognathus Nasogaluakus Quebecius
Type: Holoptychius
Ecology:
Distribution:
• Carboniferous of the United Kingdom (1 collection)
• Givetian of Belarus (1)
• Devonian of Australia (1), Belarus (3), Belgium (2), Canada (3: Northern Territories, Northwest Territories, Quebec), Colombia (1), Estonia (8), Iran (1), Ireland (1), Latvia (6), Norway (1), Poland (1), the Russian Federation (3), the United Kingdom (1), United States (4: Colorado, Pennsylvania)
Total: 38 collections including 59 occurrences