Most lobosans possess broad, bluntly rounded pseudopods, although one genus in the group, the recently discovered Sapocribrum, has slender and threadlike (filose) pseudopodia.

[1] In current classification schemes, Lobosa is a subphylum, composed mainly of amoebae that have lobose pseudopods but lack cilia or flagella.

[4] Carpenter's Lobosa consisted of amoeboid organisms whose endoplasm (endosarc) flows into lobe-like "pseudopodian prolongations."

[5] As currently defined, the subphylum Lobosa includes both shelled (testate) and naked amoebae (gymnamoebae), but excludes some organisms traditionally regarded as "lobosean", such as Pelomyxa and Entamoeba (Amoebozoa) and some Heterolobosea (Excavata).

[6] Flabellinia Centramoebia Corycidia Echinamoebia Elardia Cutosea Archamoebea Variosea Dictyostelea Ceratiomyxea Myxogastrea Opisthokonta