View source for Order Gromiida Claparede & Lachmann 1859

===Family Gromiidae Reuss 1862===
Genus ''Pseudodifflugia'' Schlumberger 1862
*''Pseudodifflugia gracilis'' Schlumberger 1845 - water, sphagnum
*''Pseudodifflugia gracilis'' v. ''terricola'' Bonnet & Thomas 1960 - moss, soil

===Family Amphitrematidae Poche 1913===
Genus ''Amphitrema'' Archer 1869
*''Amphitrema flavum'' Archer 1869 - common, swamp.
*''Amphitrema wrigthianum'' Archer - sporadic, swamp.

===Family Euglyphidae Wallich 1846===
Genus ''Euglypha'' Dujardin 1840
*''Euglypha acantophora'' (Ehrenberg 1838) 1949 - sporadic, swamp.
*''Euglypha anadonta'' Bonnet 1962 - common, soil.
*''Euglypha anadonta'' v. ''magna'' Schönborn 1964 - rare, soil.
*''Euglypha ciliata'' (Ehrenberg 1848) Wailes 1915 - dominant, soil.
*''Euglypha ciliata'' f. ''glabra'' Wailes 1915 - dominant, soil.
*''Euglypha compressa'' Carter 1864 - common, soil.
*''Euglypha compressa'' f. ''glabra'' Wailes 1915 - common, soil.
*''Euglypha cristata'' Leidy 1879 - rare, swamp.
*''Euglypha cristata'' f. ''decora'' Jung 1915 - sporadic, swamp.
*''Euglypha cuspidata'' Bonnet 1959 - sporadic, soil.
*''Euglypha denticulata'' Brown 1912 - common, swamp.
*''Euglypha filifera'' Penard 1890 - common, swamp.
*''Euglypha laevis'' (Ehrenberg 1845) Perty 1849 - dominant, soil.
*''Euglypha laevis'' v. ''lanceolata'' Playfair 1917 - rare, soil.
*''Euglypha pseudociliata'' Chardez 1962 - common, soil.
*''Euglypha recurvispina'' Bonnet 1966 - sporadic, swamp.
*''Euglypha rotunda'' Wailes & Penard 1911 - dominant, soil.
*''Euglypha rotinda'' v. ''obliqua'' Decloitre 1956 - rare, soil.
*''Euglypha strigosa'' (Ehrenberg 1871) Leidy 1879 - dominant, soil.
*''Euglypha strigosa'' v. ''glabra'' Wailes 1915 - common, soil.
*''Euglypha strigosa'' v. ''muscorum'' Wailes & Penard 1911 - sporadic, soil.
*''Euglypha tuberculata'' Dujardin 1911 - rare, swamp.
*''Euglypha umbiculata'' Bonnet 1959 - rare, soil.
Genus ''Assulina'' Ehrenberg 1811
*''Assulina muscorum'' Greeff 1888 - dominant, soil.
*''Assulina muscorum'' v. ''stenostoma'' Schönborn 1964 - rare, soil.
*''Assulina seminulum'' (Ehrenberg 1848) Leidy 1879 - common, soil.
Genus ''Valkanovia'' Tappan 1966
*''Valkanovia delicatula'' (Valkanov 1962) Tappan 1966 - common, soil.
Genus ''Placocista'' Leidy 1879
*''Placocista glabra'' Penard 1902 - common, swamp.
*''Placocista jurassica'' Penard 1905 - dominant, swamp.
*''Placocista lens'' Penard 1899 - dominant, swamp.
*''Placocista spinosa'' (Carter 1865) Leidy 1879 - dominant, swamp.
Genus ''Tracheleuglypha'' Deflandre 1928
*''Tracheleuglypha acolla'' Bonnet & Thomas 1955 - common, swamp.
*''Tracheleuglypha acolla'' v. ''aspera'' Bonnet & Thomas 1955 - sporadic, swamp.
*''Tracheleuglypha acolla'' v. ''stenostoma'' Chardez 1960 - sporadic, soil.
*''Tracheleuglypha dentata'' (Vejdovsky 1882) Deflandre 1928 - common, swamp.

===Family Peregriniidae Cavalier-Smith===
Genus ''Gyromitus'' Skuja 
*''Gyromitus disomatus'' Skuja - freshwater; in plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).

===Family Thaumatomonadidae Hollande===
Genus ''Thaumatomonas'' Lauterborn
*''Thaumatomonas coloniensis'' Wylezich, Mylnikov, Weitere, and Arndt - freshwater; isolated from water samples from meromictic lake Trekhtzvetnoe (Mindolina, 2025).
*''Thaumatomonas seravini'' Mylnikov et Karpov 1993 - freshwater, marine; isolated from water samples from meromictic lake Trekhtzvetnoe (Mindolina, 2025).

===Family Trinematiidae Hoogenrad & De Groot 1940===
Genus ''Trinema'' Dujardin 1841
*''Trinema complanatum'' Penard 1890 - dominant, soil.
*''Trinema complanatum'' v. ''globulosa'' Chardez 1959 - rare, soil.
*''Trinema complanatum'' v. ''platystoma'' Schönborn 1964 - sporadic, soil.
*''Trinema enchelys'' (Ehrenberg 1838) Leidy 1978 - rare, soil.
*''Trinema grandis (Chardez 1960) Golemansky 1963 - sporadic, soil.
*''Trinema lineare'' Penard 1889- dominant, soil.
*''Trinema lineare'' f. ''truncatum'' Chardez 1964 - sporadic, swamp.
*''Trinema penardi''Thomas & Chardez 1958 - common., soil.
Genus ''Corythion'' Taranek 1871
*''Corythion delamarei'' Bonnet & Thomas 1960 - soil
*''Corythion dubium'' Taranek 1881 - dominant, soil.
*''Corythion dubium'' v. ''orbicularis'' Penard 1910 - dominant, soil.
*''Corythion pulchellum'' Penard 1890 - rare, soil.

===Family Cyphoderiidae De Saedeler 1845===
Genus ''Cyphoderia'' Schlumberger 1845
*''Cyphoderia ampulla'' (Ehrenberg 1840) Schlumberger 1845 - rare, swamp.
*''Cyphoderia'' aff. ''littoralis'' (Golemansky 1973) - marine.  Found in aerobic zone of semi-isolated coastal stratified lake Kislo-Sladkoe (Mindolina et al., 2023). 
[[rus: Отряд Gromiida Claparede & Lachmann 1859]]