Okamoto et al. (2009)

Okamoto N., Chantangsi C., Horak A., Leander B. S., Keeling P. J. (2009). Molecular phylogeny and description of the novel katablepharid Roombia truncata gen. et sp. nov., and establishment of the Hacrobia taxon nov. PLoS One 4, e7080, .

• Eukaryota
  • Hacrobia
    • Kathablepharida
    • Cryptophyta
    • Biliphyta [?]
    • Telonemida
    • Centrohelida
    • Haptophyta

Pugachev et al. (2011)

Pugachev, O. N. ed. (О.Н. Пугачев). 2011. Protista 3: Guide-book on zoology. (Протисты 3: руководство по зоологии). St. Petersburg: KMK Scientific Press, 474 pp. (in Russian, with English summaries), .

Protists (Eukaryota)

• Hacrobia
  • Haptophyta
  • Centrohelida Kühn, 1926
  • Kathablepharida Okamoto & Inouye, 2005
  • Cryptophyta

Ruggiero et al. (2015)

Ruggiero, M.A., Gordon, D.P., Orrell, T.M., Bailly, N., Bourgoin, T., Brusca, R.C., Cavalier-Smith, T., Guiry, M. D. & Kirk, P. M. (2015). A Higher Level Classification of All Living Organisms. PLoS ONE 10(4): e0119248, .

• Superkingdom Prokaryota
  • Kingdom Archaea [= Archaebacteria]
  • Kingdom Bacteria [= Eubacteria]
• Superkingdom Eukaryota
  • Kingdom Protozoa
    • Subkingdom Eozoa
      • Infrakingdom Euglenozoa
      • Infrakingdom Excavata
    • Subkingdom Sarcomastigota
      • Phylum Amoebozoa
      • Phylum Choanozoa [with Microsporidia, Animalia, and Fungi constitutes "Supergroup Opisthokonta"]
      • Phylum Microsporidia [with Choanozoa, Animalia, and Fungi constitutes "Supergroup Opisthokonta"]
      • Phylum Sulcozoa
  • Kingdom Chromista
    • Subkingdom Hacrobia
      • Phylum N.N.
        • Class Endohelea
          • Order Heliomonadida
          • Order Microhelida
        • Class Picomonadea
          • Order Picomonadida
        • Class Telonemea
          • Order Telonemida
      • Phylum Cryptista
        • Subphylum Palpitia
          • Class Palpitea
        • Subphylum Rollomonadia
          • Class Cryptophyceae
            • Order Cryptomonadales
            • Order Pyrenomonadales
            • Order Tetragonidiales
          • Class Goniomonadea
            • Order Goniomonadida
          • Class Leucocryptea
            • Order Katablepharida
            • Order Palpitida
      • Phylum Haptophyta
        • Class Coccolithophyceae [= Prymnesiophyceae]
          • Order Coccolithales
          • Order Coccosphaerales
          • Order Isochrysidales
          • Order Phaeocystales
          • Order Prymnesiales
          • Order Syracosphaerales
          • Order Zygodiscales
        • Class Pavlovophyceae
          • Order Pavlovales
      • Phylum Heliozoa
        • Class Centrohelea
          • Order Acanthocystida
          • Order Pterocystida
    • Subkingdom Harosa [= "Supergroup SAR"]
      • Infrakingdom Halvaria
        • Superphylum Alveolata
        • Superphylum Heterokonta [= "Supergroup Stramenopiles"]
      • Infrakingdom Rhizaria
  • Kingdom Fungi
  • Kingdom Plantae [= Archaeplastida]
  • Kingdom Animalia

Cavalier-Smith et al. (2015)

Cavalier-Smith, T., Chao, E. E., & Lewis, R. (2015). Multiple origins of Heliozoa from flagellate ancestors: New cryptist subphylum Corbihelia, superclass Corbistoma, and monophyly of Haptista, Cryptista, Hacrobia and Chromista. Molecular Phylogenetics and Evolution, 93, 331-362, .

Kingdom Chromista Cavalier-Smith, 1981

• Subkingdom 1. Hacrobia Okamoto et al. ex Cavalier-Smith, 2010 and Cavalier-Smith, 2010
  • Phylum 1. Haptista Cavalier-Smith phyl. n. (originally infrakingdom)
    • Subphylum 1. Haptophytina Cavalier-Smith subphyl. n. (compositionally identical to phylum Haptophyta Hibberd ex Cavalier-Smith, 1986
      • Class 1. Coccolithophyceae Casper, 1972 ex Rothmaler, 1951 (=Prymnesiophyceae Hibberd em. Cavalier-Smith et al., 1996a and Cavalier-Smith et al., 1996b) (e.g. Emiliania, Isochrysis, Prymnesium)
      • Class 2. Pavlovophyceae Cavalier-Smith, 1986 (e.g. Diacronema, Pavlova)
      • Class 3. Rappephyceae Cavalier-Smith cl. n. (Diagnosis: rappemonads: plastid-bearing sisters of Coccolithophyceae plus Pavlovophyceae)
    • Subphylum 2. Heliozoa Cavalier-Smith subphyl. n.
      • Class Centrohelea Kühn, 1926 ex Cavalier-Smith, 1993 (e.g. Oxnerella, Polyplacocystis, Acanthocystis, Raphidiophrys) (= unranked Centroheliozoa: Dürrschmidt and Patterson, 1987a and Dürrschmidt and Patterson, 1987b)
  • Phylum 2. Cryptista Cavalier-Smith, 1989 em.
    • Subphylum 1. Rollomonadia Cavalier-Smith (2013)
      • Superclass 1. Cryptomonada Cavalier-Smith, 2004 (as subphylum) stat. n.
        • Class 1. Cryptophyceae Fritsch in West and Fritsch, 1927 (e.g. Guillardia)
        • Class 2. Goniomonadea Cavalier-Smith, 1993 (Goniomonas)
      • Superclass 2. Leucocrypta Cavalier-Smith supercl. n. (Diagnosis: as for subphylum Leucocrypta and class Leucocryptea in Cavalier-Smith (2004) p. 77)
        • Class Leucocryptea Cavalier-Smith, 2004
          • Order Kathablepharida Cavalier-Smith, 1993 (e.g. Kathablepharis, Roombia)
    • Subphylum 2. Palpitia Cavalier-Smith in Cavalier-Smith and Chao, 2012
      • Class Palpitea Cavalier-Smith in Cavalier-Smith and Chao, 2012 (Palpitomonas)
    • Subphylum 3. Corbihelia Cavalier-Smith subphyl. n.
      • Superclass 1. Endohelia Cavalier-Smith supercl. n.
        • Class Endohelea Cavalier-Smith in Yabuki et al., 2012
          • Order 1. Microhelida Cavalier-Smith in Yabuki et al., 2012 (Microheliella)
          • Order 2. Heliomonadida Cavalier-Smith, 1993 em. 2012 (Heliomorpha)
      • Superclass 2. Corbistoma Cavalier-Smith supercl. n.
        • Class 1. Picomonadea Seenivasan et al., 2013
          • Order Picomonadida Seenivasan et al., 2013 (Picomonas)
        • Class 2. Telonemea Cavalier-Smith, 1993
          • Order Telonemida Cavalier-Smith, 1993 (Telonema, Lateronema)
• Subkingdom 2. Harosa Cavalier-Smith, 2010a and Cavalier-Smith, 2010b
  • Infrakingdom 1. Halvaria Cavalier-Smith, 2010a and Cavalier-Smith, 2010b
    • Superphylum 1. Heterokonta Cavalier-Smith, 1981 (=stramenopiles)
      • Phyla Ochrophyta, Pseudofungi, Bigyra
    • Superphylum 2. Alveolata Cavalier-Smith, 1991 stat. n. 2013
      • Phyla Miozoa (Subphyla Protalveolata and Myzozoa (infraphyla Dinozoa and Apicomplexa)) and Ciliophora
  • Infrakingdom 2. Rhizaria Cavalier-Smith, 2002a and Cavalier-Smith, 2002b
    • Phyla Cercozoa and Retaria