The Flabellinea are a class of Amoebozoa. During locomotion the cells are flattened and have a clear layer called hyaloplasm along the front margin. Some form slender subpseudopodia projecting outward from the hyaloplasm, but the cell mass does not flow into these as in true pseudopodia, and advances without a definite central axis as in the Tubulinea. They also lack distinctive features like shells and flagella, and are united mainly by evidence from molecular trees.
The name Discosea, introduced by Cavalier-Smith et al. (2004), refers a similar but slightly larger group.
^Cavalier-Smith, T., Chao, E-Y, Oates, B. (2004). "Molecular phylogeny of the Amoebozoa and evolutionary significance of the unikont Phalansterium". European Journal of Protistology40: 21–48. doi:10.1016/j.ejop.2003.10.001.
^Kudryavtsev A, Bernhard D, Schlegel M, Chao EE, Cavalier-Smith T (August 2005). "18S ribosomal RNA gene sequences of Cochliopodium (Himatismenida) and the phylogeny of Amoebozoa". Protist156 (2): 215–24. doi:10.1016/j.protis.2005.03.003. PMID16171188.