After Parker, 1982
<==o Gragarinia |--o Archigregarinida | |-- Selenidioididae | `-- Exoschihizonidae |--o Eugregarinida | |-- Siedleckiidae [Blastogregarinina] | |--o Acephalina | | |-- Selenidiidae | | |-- Lecudinidae | | |-- Urosporidae | | |-- Aikinetocystidae | | |-- Monocystidae | | |-- Diplocystidae | | |-- Allantocystidae | | |-- Schaudinnellidae | | |-- Ganymenidae | | `-- Enterocystidae | `--o Cephalina | |-- Porosporidae [Porosporoidea] | |-- Fusionidae [Fusionoidea] | |--o Gregarinoidea | | |-- Cephaloidophoridae | | |-- Cephalolobidae | | |-- Uradiophoridae | | |-- Gregarinidae | | |-- Metameridae | | |-- Didymophyidae | | `-- Hirmocystidae | `--o Stenophoroidea | |-- Stenophoridae | |-- Leidyanidae | |-- Cnemidosporidae | |-- Monoductidae | |-- Sphaerocystidae | |-- Trichorhynchidae | |-- Dactylophoridae | |-- Stylocephalidae | |-- Actinocephalidae | |-- Acutidae | `-- Monoicidae `--o Neogrerarinida |-- Lipotrophidae |-- Gigaductidae |-- Ophryocystidae |-- Schizocystidae |-- Caulleryellidae `-- Syncystidae
Reference(s):
- Parker, S. P. (ed.), 1982: Synopsis and classification of living organisms. Vols. 1 & 2
–McGrew-Hill Book Company