Vexilliferidae

Locomotive amoeba up to 60 µm in length; contracted form around 35 µm. Shape during locomotion mainly club-shaped with an occasional broad pseudopodium. The amoeba is very slow moving even in this 'active' phase taking several minutes to move one body-length. Shape at other times discoid with numerous long, slender pseuodopodia. Floating form with radiating pseudopodia. Cytoplasm filled with refractile granules and several vesicles. No posterior uroid or cysts formed. Mononucleate, or more commonly, binucleate. Single species, S. tardus Schaeffer, 1926, described from shallow coastal waters.

Vexilliferidae is a family of Amoebozoa, classified under Dactylopodida.

It has also been classified under Gymnamoebia.

It includes the genera Neoparamoeba, Pseudoparamoeba and Vexillifera.