Family Flamellidae Lahr and Katz 2011
Diagnosis: Flattened amoebae capable of forming fan-shaped or semicircular locomotive form with numerous fine, tapering hyaline subpseudopodia, directed anteriorly; ciliated stages unknown.
Type species: Flamella magnifica Schaeffer 1926
Genus Flamella Schaeffer, 1926 emen. Kudryavtsev et al, 2009
Diagnosis: Flattened naked amoebae; fan-shaped, semicircular or diadem-shaped during locomotion. Wide anterior hyaloplasm often producing blunt finger-shaped hyaline subpseudopodia; trailing filaments present in most species. Movement non-eruptive. Cysts, when present, double-walled with ostioles and operculae.
F. fluviatilis F. piscinae