Protist phyla

The phylum Sarcomastigophora belongs to the Protista or protoctista kingdom and it includes many unicellular or colonial, autotrophic, or heterotrophic organisms. It is characterized by flagella, pseudopodia, or both.

Picozoa, Picobiliphyta, picobiliphytes, or piliphytes are protists of a phylum of marine unicellular heterotrophic eukaryotes with a size of less than about 3 micrometers. They were formerly treated as eukaryotic algae and the smallest member of photosynthetic picoplankton before it was discovered they do not perform photosynthesis. The phylum currently contains a single species, Picomonas judraskeda. They probably belong in the Archaeplastida as sister of the Rhodophyta.

thumb|Electron micrograph of T. rivulare

Loukozoa (From Greek loukos: groove) is a proposed taxon used in some classifications of eukaryotes, consisting of the Metamonada and Malawimonadea. Ancyromonads are closely related to this group, as sister of the entire group, or as sister of the Metamonada. Amorphea may have emerged in this grouping, specifically as sister of the malawimonads.