Silva (1962)

Silva, P.C. (1962). Classification of algae. In: Lewin, R.A. (ed.). Physiology and biochemistry of algae. Academic Press, New York and London, pp. 827–837, ,

"Algae"

• Cryptophyta
  • Cryptophyceae

John O. Corliss (1984)

From The kingdom Protista and its 45 phyla

In Kingdom Protista
Assemblage "Cryptomonads"
Phylum Cryptophyta Pascher, 1914

Cavalier-Smith (1986)

Cavalier-Smith, T. (1986). The kingdom Chromista, origin and systematics. In: Round, F.E. and Chapman, D.J. (eds.). Progress in Phycological Research. 4: 309–347, .

Kingdom Chromista

• Subkingdom Cryptophyta
  • Phylum Cryptophyta

Gillott in Margulis et al. (1990)

Gillott, M., 1990. 11. Phylum Cryptophyta (Cryptomonads). In: Margulis, L., J.O. Corliss, M. Melkonian, D.J. Chapman (ed.). Handbook of Protoctista. Jones and Bartlett Publishers, Boston, p. 139-151. See Brands, S.J. (1989-2015), .

Kingdom Protoctista

• Section III: Phyla with flagellated stages, but without complex sexual cycles
  • Phylum 11. Cryptophyta
    • Class Cryptophyceae

Cavalier-Smith (1993)

From Kingdom Protozoa and its 18 phyla

In Kingdom Chromista, Subkingdom Euchromista
Infrakingdom Cryptista Cavalier-Smith 1989, stat. nov.
Phylum Cryptista (syn. Cryptophyta)

• Class Cryptomonadea
• Class Goniomonadea

Cavalier-Smith (1998)

From A revised six-kingdom system of life

In Kingdom Chromista
Subkingdom Cryptista Cavalie-Smith 1989
Phylum Cryptophyta Cavalier-Smith 1986

Clay et al. (1999)

Clay, B.L., Kugrens, P., and Lee, R.E. (1999). A revised classification of Cryptophyta. The Botanical Journal of the Linnaen Society 131: 131–151, .

• Phylum Cryptophyta
  • Class Cryptophyceae
    • Order Cryptomonadales
    • Order Pyrenomonadales
  • Class Goniomondea
    • Order Goniomonadales

David J. Patterson (1999)

• Patterson, D.J. 1999. The Diversity of Eukaryotes. The American Naturalist 154 (S4): 96–124. DOI: 10.1086/303287 PDF Reference page. 

In Eukaryotes
Clade Cryptomonads