Placodermi
Suborder

Pachyosteina Stensiö, 1944

Luokittelu
Organism groupBiota
KingdomAnimalia
PhylumChordata
SubphylumVertebrata
Organism groupGnathostomata
ClassPlacodermi
OrderEuarthrodira
SuborderActinolepina
Coccosteina
Heterostiina
Pachyosteina
SuperfamilyDinichthyoidea