Lobose amoebae are forms with broad, blunt rhizopods. They may either have a single pseudopod at the front or many branching outwards. They move by flowing into the pseudopod and feed by physically engulfing other objects, trapping them in vacuoles. Forms include:
Filose amoebae include forms with fine, branching rhizopods. TaxonGranuloreticulosa? has members with rhizopods that form a network, and include the well-known shelled Foraminifera.
The actinopod amoebae are divided into the Radiolaria, marine mostly shelled forms, and Heliozoa, which are mostly-fresh water and naked. Pseudopods take the form of rigid spikes that collect food and aid in buoyancy. Some heliozoans move by rolling along the substrate. Radiolarian forms include:
and heliozoan forms include:
Also worth mentioning is the TaxonXenophyophorea?, which includes various giant marine forms. All of these are classified under the KingdomProtista.