vannellidae vannellidae the vannellidae are a family of amoebozoa, which are found in soil, fresh- and salt water. the most common genus is vannella. vannellidae scientific classification domain: eukaryota phylum: amoebozoa class: discosea subclass: flabellinia order: vannellidasmirnov et al., 2005 family: vannellidaebovee, 1970 genera clydonella discamoeba lingulamoeba paravannella pessonella platyamoeba protosteliopsis ripella ?unda vannella description vannellidae tend to be flattened and fan-shaped during motion, although some are long and narrow, and have a prominent clear margin at the anterior. in most amoebae, the endoplasm glides forward through the center of the cell, but vannellids undergo a sort of rolling motion with the outer membrane sliding around like a tank tread. these amoebae are usually 10-40 μm in size, but some are smaller or larger. vannellidae are surrounded by an outer covering called the glycocalyx, which is generally 10-20 nm across, though the thickness varies among species. in some species, a layer of hair-like filaments called glycostyles protrudes from the glycocalyx. taxonomy molecular phylogenies include them in the class flabellinia as a sister group to the others, which have subpseudopodia.