Massisteria is a genus of Cercozoa.[2] They are naked protists with a central cell body from which several delicately thin and stiff pseudopodia extend, each one bearing a small number of granules. Their pseudopodia remain adhered to the substrate, as is typical among leucodictyids. The cell body has two flagella that, during feeding, are held in place.[1]
^Mylnikov, Alexander P.; Weber, Felix; Jürgens, Klaus; Wylezich, Claudia (2015-08-01). "Massisteria marina has a sister: Massisteria voersi sp. nov., a rare species isolated from coastal waters of the Baltic Sea". European Journal of Protistology. 51 (4): 299–310. doi:10.1016/j.ejop.2015.05.002. ISSN1618-0429. PMID26163290.