Class Tubulinea Smirnov et al., 2005 (=Lobosea Cavalier-Smith, 2004)

Diagnosis: Amoebozoans producing lobose pseudopodia. The entire cell or individual pseudopodia (in polypodial forms) are tubular, cylindrical or subcylindrical, rounded in cross-section. Flattened or branched cells are capable of altering their locomotive form from a broad, expanded morphology to monopodial or polypodial, with subcylindrical pseudopodia. Cytoplasmic streaming is monoaxial, occurring within each pseudopodium or throughout the cell body. No convincing evidence exists for ciliate stages. Two major lineages are testate (Arcellinida and Amphitremidae), and rare sorocarpic taxa are known (e.g., Copromyxa). Sporocarpic fruiting has not been reported.