Opinions from R. H. Denison 1975

  • 'Acanthothoraci belongs to Placodermi'
  • 'Actinolepidae belongs to Actinolepina'
  • 'Actinolepina belongs to Arthrodira'
  • 'Antarctaspididae [misspelled as Antarctaspidae] belongs to Antarctaspina'
  • 'Antarctaspina belongs to Phyllolepida'
  • 'Antiarcha belongs to Placodermi'
  • 'Arthrodira belongs to Placodermi'
  • 'Asterolepididae [misspelled as Asterolepidae] belongs to Antiarcha'
  • 'Asterosteidae belongs to Rhenanida'
  • 'Bothriolepididae belongs to Antiarcha'
  • 'Brachydeiridae belongs to Brachydeirina'
  • 'Brachydeirina belongs to Arthrodira'
  • 'Buchanosteidae belongs to Coccosteina'
  • 'Bungartiidae belongs to Pachyosteina'
  • 'Bungartius belongs to Bungartiidae'
  • 'Coccosteida was reranked as the order Coccosteina and belongs to Arthrodira'
  • 'Coccosteidae belongs to Coccosteina'
  • 'Dinichthyidae belongs to Pachyosteina'
  • 'Gemuendenaspidae belongs to Coccosteina'
  • 'Heterosteidae [misspelled as Heterostiidae] belongs to Heterostiina'
  • 'Heterostiina belongs to Arthrodira'
  • 'Holonematidae belongs to Holonematina'
  • 'Holonematina belongs to Arthrodira'
  • 'Homostiidae belongs to Coccosteina'
  • 'Kolymaspidae belongs to Acanthothoraci'
  • 'Leiosteidae belongs to Pachyosteina'
  • 'Leptosteidae belongs to Brachydeirina'
  • 'Macropetalichthyidae belongs to Petalichthyida'
  • 'Mylostomatidae belongs to Pachyosteina'
  • 'Pachyosteida was reranked as the suborder Pachyosteina and belongs to Arthrodira'
  • 'Palaeacanthaspidae belongs to Acanthothoraci'
  • 'Paraplesiobatidae belongs to Pseudopetalichthyida'
  • 'Petalichthyi is corrected as Petalichthyida and belongs to Placodermi'
  • 'Phlyctaeniidae belongs to Phlyctaeniina'
  • 'Phlyctaenina [misspelled as Phlyctaeniina] belongs to Arthrodira'
  • 'Pholidosteidae belongs to Coccosteina'
  • 'Phyllolepida was reranked as a order and belongs to Placodermi'
  • 'Phyllolepidae belongs to Phyllolepina'
  • 'Phyllolepina belongs to Phyllolepida'
  • 'Placodermi belongs to Gnathostomata'
  • 'Pseudopetalichthida is corrected as Pseudopetalichthyida and belongs to Placodermi'
  • 'Ptyctodontida belongs to Placodermi'
  • 'Ptyctodontidae belongs to Ptyctodontida'
  • 'Radotinidae belongs to Acanthothoraci'
  • 'Rhachiosteidae [misspelled as Rachiosteidae] belongs to Coccosteina'
  • 'Rhenanida belongs to Placodermi'
  • 'Selenosteidae belongs to Pachyosteina'
  • 'Sinolepidae belongs to Antiarcha'
  • 'Stensioellida belongs to Placodermi'
  • 'Stensioellidae belongs to Stensioellida'
  • 'Titanichthyidae belongs to Pachyosteina'
  • 'Trematosteidae belongs to Pachyosteina'
  • 'Williamsaspidae belongs to Phlyctaeniina'
  • 'Wuttagoonaspidae belongs to Wuttagoonaspina'
  • 'Wuttagoonaspina belongs to Arthrodira'