Placodermi - Arthrodira - Titanichthyidae
Parent taxon: Arthrodira according to R. H. Denison 1984
See also Denison 1975, Denison 1978 and Jordan 1963
Sister taxa: Acanthaspida, Actinolepina, Africanaspis, Antarctolepis, Arctolepidae, Arctonema, Arenipiscis, Aspidichthys, Atlantidosteus, Brachydeirina, Brachythoraci, Bruntonichthys, Bullerichthys, Bungartiidae, Burrinijucosteus, Callognathus, Camuropiscidae, Coccosteina, Copanognathus, Cosmacanthus, Cravenaspis, Diplognathus, Erikaspis, Errolosteus, Eskimaspis, Euarthrodira, Eubrachythoraci, Glyptaspis, Goodradigbeeon, Grazosteus, Groenlandaspididae, Harrytoombsia, Heintzosteus, Heterostiina, Hollardosteus, Holonematina, Incisoscutoidea, Kendrickichthys, Kimberleyichthys, Kueichowlepis, Latocamurus, Laurentaspis, Lurapullaspis, Machaerognathus, Mcnamaraspis, Murmur, Mylostomatidae, Operchallosteus, Overtonaspis, Pachyosteidae, Pachyosteina, Parawilliamsaspis, Phlyctaenina, Phylctaeniida, Platyaspis, Prescottaspis, Qataraspis, Rhachiosteidae, Rolfosteus, Selenosteidae, Squamatognathus, Stegophthalami, Taemasosteus, Taunaspis, Temnothoraci, Timanosteus, Toombalepis, Toombsosteus, Torosteus, Trachosteus, Tubonasus, Wheathillaspis, Wuttagoonaspina, Yinosteus, Phlyctaenioidei, Brachythoracoidei, Actinolepidoidei, Phyllolepidoidei
Subtaxa: Holopetalichthys Titanichthys
Ecology: nektonic carnivore
Distribution: found only at Cerná Rokle at Kosor (Devonian of Czech Republic)