The Ebridea is a group of

phagotrophic Phagocytosis () is the process by which a cell uses its plasma membrane to engulf a large particle (≥ 0.5 μm), giving rise to an internal compartment called the phagosome. It is one type of endocytosis. A cell that performs phagocytosis is c ...

flagellate A flagellate is a cell or organism with one or more whip-like appendages called flagella. The word ''flagellate'' also describes a particular construction (or level of organization) characteristic of many prokaryotes and eukaryotes and their ...

eukaryote Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bacte ...

s 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"). Ebriids are usually encountered in low abundance and have a peculiar combination of ultrastructural characters including a large nucleus with permanently condensed

chromosome A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are ...

s 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

silicoflagellate Dictyochales (Silicoflagellates, or Dictyochophyceae ''sensu stricto'') are a small group of unicellular heterokont algae, found in marine environments. Characteristics In one stage of their life cycle, they produce a siliceous skeleton, compo ...

dinoflagellates The dinoflagellates (Greek δῖνος ''dinos'' "whirling" and Latin ''flagellum'' "whip, scourge") are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata and are usually considered algae. Dinoflagellates are ...

, '

radiolaria The Radiolaria, also called Radiozoa, are protozoa of diameter 0.1–0.2 mm that produce intricate mineral skeletons, typically with a central capsule dividing the cell (biology), cell into the inner and outer portions of endoplasm and Ecto ...

ns' and 'neomonads'. However, molecular phylogenies place them within

Cercozoa Cercozoa is a phylum of diverse single-celled eukaryotes. They lack shared morphological characteristics at the microscopic level, and are instead defined by molecular phylogenies of rRNA and actin or polyubiquitin. They were the first major eu ...

Taxonomy

Order Ebriales * Family † Ammodochiaceae Deflandre 1950 mmodochiidae** Genus †'' Ammodochium'' Hovasse 1932 'Tripodium'' Hovasse 1932* Family † Ditripodiaceae Deflandre 1951 itripodiidae** Genus †'' Ditripodium'' Hovasse 1932 ** Genus †'' Parathranium'' Hovasse 1932 'Dicladia'' Ehrenberg 1845** Genus †'' Thranium'' Hovasse 1932 * Family Ebriaceae Lemmermann 1901 briidae Poche 1913** Genus †'' Ebrinula'' Deflandre 1950 ** Genus '' Parebria'' Hovasse 1932 ** Genus '' Ebria'' Borgert 1891 ��''Ebriella'' Deflandre 1934b; †''Parammodochium'' Deflandre 1932; †''Proebria'' Hovasse 1943* Family Hermisinaceae Hovasse 1943 briopsidaceae Deflandre 1650; Hermisinidae; Podamphoraceae Dangeard 1942** 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 'Hovassebria'' Deflandre 1934 nomen nudum** Genus †'' Micromarsupium'' Deflandre 1934 ** Genus †'' Parebriopsis'' Hovasse 1932 ** Genus †'' Podamphora'' Gemeinhardt 1931 'Podium'' Hovasse 1932** 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 'Bosporella'' Hovasse 1931

References

{{Taxonbar, from=Q724556 Filosa