Concise hierarchy

(Kingdom) Chromista - (Phylum) Ochrophyta - (Class) Raphidophyceae - (Order) Actinophryida - (Family) Actinophryidae

Subsequent positions

Actinosphaeridae (Family) Schulze, 1877

Ref: F.E. Schulze, 1877: 27.

Current position

Actinophryidae (Family) Dujardin, 1841

Ref: T. Cavalier-Smith & J.M. Scoble, 2013(2012): 342.

Alternative positions

Actinophrydia (Suborder)	Ref: I. Eibl-Eibesfeldt et al., 1975 (1971): 585. [inferred name]
Actinosphaeridae (Family) Schulze, 1877	Ref: F.E. Schulze, 1877: 27. [new position]

Historical positions

Actinophryidae (Family) Dujardin, 1841	Ref: S.M. Adl et al., 2005: 426.
Actinophryidae (Family) Dujardin, 1841	Ref: K.A. Mikrjukov & D.J. Patterson, 2001: 8-9, 17.
actinophryids ([unranked])	Ref: D.J. Patterson, 2001: 21.
Actinophryidae (Family) Dujardin, 1841	Ref: K.A. Mikrjukov et al., 2000: 866.
actinophryids ([unranked])	Ref: D.J. Patterson, 1999: S102.
Heliozoa (Phylum) Haeckel, 1866	Ref: T. Cavalier-Smith, 1998: table 3 (p. 233). [rough position]
Nucleohelea (Class) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1993b: 988. [rough position]
Actinopoda (Phylum) Calkins, 1902	Ref: L. Margulis & K.V. Schwartz, 1982: 104. [rough position]
Actinophryidae (Family) Dujardin, 1841	Ref: J. Cachon & M. Cachon, 1982: 567.
Heliozoa (Order)	Ref: T.I. Storer et al., 1979: 356. [rough position]
Actinophrydia (Suborder)	Ref: I. Eibl-Eibesfeldt et al., 1975 (1971): 585. [inferred name]

Number of Subtaxa

2025	Available in Systema Naturae 2000	4s
1989-present	Systema Naturae 2000	[4s]
2001	K.A. Mikrjukov & D.J. Patterson	[4s]