†family Holonematidae Obruchev 1932 (armour-plated fish)
Placodermi - Arthrodira - Holonematidae
Parent taxon: Phlyctaenina according to R. H. Denison 1984
See also Denison 1975 and Denison 1978
Sister taxon: Phlyctaeniidae
Subtaxa: Belemnacanthus Deirosteus Deveonema Gyroplacosteus Holonema Megaloplax Rhenonema Tiaraspis Tropidosteus
Ecology: nektonic carnivore
Distribution: