ebriid ebriid the ebridea is a group of phagotrophic flagellate eukaryotes present in marine coastal plankton communities worldwide. ebria tripartita is one of two (possibly four) described extant species in the ebridea. members of this group are named for their idiosyncratic method of movement (ebrius, "drunk"). ebriid ebria tripartita scientific classification domain: eukaryota (unranked): sar (unranked): rhizaria phylum: cercozoa class: thecofilosea order: ebrialeshonigsberg 1964 family †ammodochiaceae †ditripodiaceae ebriaceae hermisinaceae synonyms stereotestales ebriida poche ebriids are usually encountered in low abundance and have a peculiar combination of ultrastructural characters including a large nucleus with permanently condensed chromosomes and an internal skeleton composed of siliceous rods. the taxonomic history of the group has been tumultuous and has included a variety of affiliations, such as silicoflagellates, dinoflagellates, 'radiolarians' and 'neomonads'. however, molecular phylogenies place them within cercozoa. taxonomy order ebriales family †ammodochiaceae deflandre 1950 genus †ammodochium hovasse 1932 family †ditripodiaceae deflandre 1951 genus †ditripodium hovasse 1932 genus †parathranium hovasse 1932 genus †thranium hovasse 1932 family ebriaceae lemmermann 1901 genus †ebrinula deflandre 1950 genus parebria hovasse 1932 genus ebria borgert 1891 family hermisinaceae hovasse 1943 genus †craniopsis hovasse 1932 ex frenguelli 1940 genus †ebriopsis hovasse 1932 genus †falsebria deflandre 1950 genus †haplohermesinum hovasse 1943 genus †hermesinella deflandre 1934 genus †hermesinopsis deflandre 1934 genus †hovassebria deflandre 1936 genus †micromarsupium deflandre 1934 genus †parebriopsis hovasse 1932 genus †podamphora gemeinhardt 1931 genus †podamphoropsis dumitrica 1973 genus †polyebriopsis hovasse 1932 genus †pseudammodochium hovasse 1932 genus †pseudomicromarsupium busen & wise 1977 genus †semantebria frenguelli 1940 genus †spyrebria frenguelli 1940 genus hermesinum zacharias 1906