Kahl (1930-1935)

Kahl, A. 1930–35. Urtiere oder Protozoa I: Wimpertiere oder Ciliata (Infusoria). In: Die Tierwelt Deutschlands 18, (Ed. F. Dahl). 4 vols. G. Fischer, Jena, , .

Patterson, D.J. 1978. Kahl's Keys to the Ciliates. Translation of the keys from 'Wimpertiere oder Ciliata'. 1978, University of Bristol, .

• Phylum Protozoa Goldfuss, 1817
  • Superklasse Ciliophora Doflein, 1901
    • Klasse Protociliata Metcalf
      • Fam. Opalinidae
    • Klasse Euciliata Metcalf
      • Unterklasse Infusoria Ledermüller, 1760
      • Unterklasse Suctoria

Kudo (1954)

From Protozoology, 4th ed., .

Phylum Protozoa Goldfuss

• Subphylum Ciliophora Doflein
  • Class 1 Ciliata Perty
    • Subclass 1 Protociliata Metcalf
      • Family Opalinidae Claus
        • Genus Opalina Purkinje and Valentin, Genus Cepedea Metcalf, Genus Protoopalina Metcalf, Genus Zelleriella Metcalf
    • Subclass 2 Euciliata Metcalf
  • Class 2 Suctoria Claparède and Lachmann

David J. Patterson (1999)

From The Diversity of Eukaryotes

In Stramenopiles, Slopalines
Clade Opalinidae

Delvinquier & Patterson in Lee et al. (2000)

Delvinquier, B.L.J. & Patterson, D.J., 2000. Order Slopalinida Patterson, 1989. In: Lee, J.J., Leedale, G.F. & Bradbury, P. An Illustrated Guide to the Protozoa. Society of Protozoologists/Allen Press: Lawrence, Kansas, U.S.A, 2nd ed., vol. 2, p. 754-759, . See Brands, S.J. (1989-2015), .

In “protozoa”, “stramenopiles”

• Order Slopalinida
  • Family Proteromonadidae
  • Family Opalinidae
    • Genus Protozelleriella Delvinquier, Markus & Passmore, 1991
    • Genus Zelleriella Metcalf, 1920, nom. nud.
    • Genus Protoopalina Metcalf, 1918
    • Genus Cepedea Metcalf, 1920
    • Genus Opalina Purkinje & Valentin, 1835
    • Genus Bezzenbergeria [invalid]
    • Genus Hegneriella [invalid]