†family Diplacanthidae Woodward 1891 (spiny fish)
Acanthodii - Diplacanthiformes - Diplacanthidae
Parent taxon: Diplacanthiformes according to J. S. Nelson et al. 2016
See also Anderson 2001, Denison 1979, Hay 1902, Jordan 1963 and Olive et al. 2019
Sister taxa: Bryantonchus, Culmacanthidae, Devononchus, Gladiobranchidae
Subtaxa: Diplacanthus Florestacanthus Milesacanthus
Ecology: nektonic carnivore
Distribution:
• Givetian of Belarus (1 collection)
• Devonian of Antarctica (1), Belarus (6), Canada (1: Quebec), Colombia (1), Estonia (3), Latvia (1), South Africa (1), the United Kingdom (6)
Total: 21 collections including 32 occurrences