Amoebozoa

● Tubulinea

Smirnov, Nassonova, Berney, Fahrni, Bolivar et Pawlowski 2005

Cells with lobose pseudopodia (lobopodia). The entire cell or individual pseudopodia (in polypodial cells) are tubular, cylindrical, or subcylindrical, rounded in cross- section. If cells are flattened or branched they are capable of altering the locomotive form from a flattened, expanded one to monopodial or polypodial, with subcylindrical pseudopodia. Monoaxial flow of the cytoplasm in every pseudopodium or in the entire cell. No ciliate stages. Two groups are testate, and two sorocarpic taxa are known. No sporocarpy has been reported.

●● Elardia

Kang et al. 2017

Cells naked or covered with a hard test; tubular or produce tubular pseudopodia; if flattened or branched, capable of altering the locomotive form to monopodial or polypodial, with tubular pseudopodia.

●●● Leptomyxida

Pussard and Pons 1976 sensu Smirnov at al. 2017

Naked amoebae with locomotive form altering from a flattened expanded or reticulate one to a subcylindrical monopodial one when in rapid movement or under specific conditions; adhesive uroidal structures always present.

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●●● Arcellinida Kent 1880

Cell covered with hard or highly rigid organic or mineral extracellular test consisting of either self-secreted elements (calcareous, siliceous, or chitinoid), a sheet-like chitinoid structure, or recycled organic or mineral particles bound together, with a single main opening.

●●●● Sphaerothecina

Kosakyan 2016

Test rigid or more or less flexible, either completely chitinoid or comprising recycled organic or mineral particles held together by an organic cement, or composed of self-secreted chitinoid or siliceous elements; always rounded in radial symmetry but varying in height from flattened saucer-shaped, hemispheric or more elongated to egg-shaped; pseudostome circular or lobed, surrounded by a collar; produces thick, digitate pseudopodia.

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Arcella gibossa
Netzelia oviformis

●●●● Difflugina

Meisterfeld 2002 sensu Kosakyan et al. 2016

Test either completely chitinoid or comprising organic or mineral particles, or recycled diatom frustules, scales or plates (often from Euglyphida), or composed of siliceous, calcite, or chitinoid self-secreted plates (idiosomes) held together by an organic cement; may produce thick, digitate pseudopodia, or move using a flattened, disc-like hyaline projection.

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Arcella gibossa
Nebela lageniformis

●●●● Heleopera sphagni

Leidy 1874

Test reinforced with mineral particles, collected euglyphid body plates or diatom frustules, slit-like aperture, numerous small digitate pseudopodia; with symbiotic Chlorella.

Heleopera sphagni
Heleopera sphagni
Heleopera sphagni

●●●● Phryganellina

Bovee 1985

Test proteinaceous, with calcified inner layer, or completely chitinoid with recycled mineral or organic particles; pseudopodia conical, pointed, consist solely of the hyaloplasm, sometimes branched and may anastomose.

●●●● incertae sedis Arcellinida: Argynnia

Vucetich 1974

Test compressed, aperture surrounded with siliceous plates. Shell greyish, composed of various euglyphid plates, mixed with diatom fragments and mineral particles porous cement. The structure of the test is intermediate between Nebela and Difflugia. Nucleus ovular.

Argynnia dentistoma

●●● Euamoebida

Lepsi 1960 sensu Smirnov et al. 2011

Naked amoebae with tubular, subcylindrical pseudopodia (or the entire cell is monopodial and subcylindrical); no alteration of the locomotive form; no adhesive uroidal structures; sorocarpic development in some species.

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Amoeba proteus