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Gyromitus
''Gyromitus'' is a genus of 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 ...ns. It is a thaumatomonad. References Imbricatea Cercozoa genera {{Cercozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thaumatomonad
Thaumatomonadida is an order of flagellates. Taxonomy Order Thaumatomonadida Shirkina 1987 * Genus ''Cowlomonas'' Scoble & Cavalier-Smith 2014 * Genus ''Heterochromonas'' Lee & Patterson 2000 * Family Esquamulidae Shiratori, Yabuki & Ishida 2012 ** Genus ''Esquamula'' Shiratori, Yabuki & Ishida 2012 * Family Peregriniidae Cavalier-Smith 2011 ** Genus ''Gyromitus'' Skuja 1939 ** Genus ''Peregrinia'' Cavalier-Smith 2011 non Vorobyeva & Lebedev 1986 * Family Thaumatomonadidae Hollande 1952 (Thaumatomastigidae Vørs 1992; Thaumatomastigaceae Patterson & Zölffel 1991] ** Genus ''Allas (flagellate), Allas'' Sandon 1927 ** Genus ''Hyaloselene'' Skuja 1956 ** Genus ''Thaumatomastix'' Lauterborn 1899 [''Chrysosphaerella'' Balonov 1980 non Lauterborn 1896; ; ''Spinifermonas'' Nicholls 1984; ''Thaumatonema'' Lauterborn 1896] ** Genus ''Thaumatospina'' Scoble & Cavalier-Smith 2014 ** Genus ''Scutellomonas'' Scoble & Cavalier-Smith 2014 ** Genus ''Ovaloplaca'' Scoble & Cavalier-Smith 2014 ** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thaumatomonad
Thaumatomonadida is an order of flagellates. Taxonomy Order Thaumatomonadida Shirkina 1987 * Genus ''Cowlomonas'' Scoble & Cavalier-Smith 2014 * Genus ''Heterochromonas'' Lee & Patterson 2000 * Family Esquamulidae Shiratori, Yabuki & Ishida 2012 ** Genus ''Esquamula'' Shiratori, Yabuki & Ishida 2012 * Family Peregriniidae Cavalier-Smith 2011 ** Genus ''Gyromitus'' Skuja 1939 ** Genus ''Peregrinia'' Cavalier-Smith 2011 non Vorobyeva & Lebedev 1986 * Family Thaumatomonadidae Hollande 1952 (Thaumatomastigidae Vørs 1992; Thaumatomastigaceae Patterson & Zölffel 1991] ** Genus ''Allas (flagellate), Allas'' Sandon 1927 ** Genus ''Hyaloselene'' Skuja 1956 ** Genus ''Thaumatomastix'' Lauterborn 1899 [''Chrysosphaerella'' Balonov 1980 non Lauterborn 1896; ; ''Spinifermonas'' Nicholls 1984; ''Thaumatonema'' Lauterborn 1896] ** Genus ''Thaumatospina'' Scoble & Cavalier-Smith 2014 ** Genus ''Scutellomonas'' Scoble & Cavalier-Smith 2014 ** Genus ''Ovaloplaca'' Scoble & Cavalier-Smith 2014 ** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukaryota
Eukaryotes () are organisms whose Cell (biology), cells have a cell nucleus, 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-domain system, three domains of life. Bacteria and Archaea (both prokaryotes) make up the other two domains. The eukaryotes are usually now regarded as having emerged in the Archaea or as a sister of the Asgard (archaea), Asgard archaea. This implies that there are only Two-domain system, two domains of life, Bacteria and Archaea, with eukaryotes incorporated among archaea. Eukaryotes represent a small minority of the number of organisms, but, due to their generally much larger size, their collective global biomass (ecology), biomass is estimated to be about equal to that of prokaryotes. Eukaryotes emerged approximately 2.3–1.8 billion years ago, during the Proterozoic eon, likely as Flagellated cell, flagellated phagotrophs. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAR Supergroup
The SAR supergroup, also just SAR or Harosa, is a clade that includes stramenopiles (heterokonts), alveolates, and Rhizaria. The name is an acronym derived from the first letters of each of these clades; it has been alternatively spelled "RAS". The term "Harosa" (at the subkingdom level) has also been used. The SAR supergroup is a node-based taxon. Note that as a formal taxon, "Sar" has only its first letter capitalized, while the earlier abbreviation, SAR, retains all uppercase letters. Both names refer to the same group of organisms, unless further taxonomic revisions deem otherwise. Members of the SAR supergroup were once included under the separate supergroups Chromalveolata (Chromista and Alveolata) and Rhizaria, until phylogenetic studies confirmed that stramenopiles and alveolates diverged with Rhizaria. This apparently excluded haptophytes and cryptomonads, leading Okamoto ''et al.'' (2009) to propose the clade Hacrobia to accommodate them. Phylogeny Based on a compi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizaria
The Rhizaria are an ill-defined but species-rich supergroup of mostly unicellular eukaryotes. Except for the Chlorarachniophytes and three species in the genus Paulinella in the phylum Cercozoa, they are all non-photosynthethic, but many foraminifera and radiolaria have a symbiotic relationship with unicellular algae. A multicellular form, ''Guttulinopsis vulgaris'', a cellular slime mold, has also been described. This group was used by Cavalier-Smith in 2002, although the term "Rhizaria" had been long used for clades within the currently recognized taxon. Being described mainly from rDNA sequences, they vary considerably in form, having no clear morphological distinctive characters (synapomorphies), but for the most part they are amoeboids with filose, reticulose, or microtubule-supported pseudopods. In the absence of an apomorphy, the group is ill-defined, and its composition has been very fluid. Some Rhizaria possess mineral exoskeleton (thecae or loricas), which is in differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 eukaryotic group to be recognized mainly through molecular phylogenies. They are the natural predators of many species of microbacteria and Archea. They are closely related to the phylum Retaria, comprising amoeboids that usually have complex shells, and together form a supergroup called Rhizaria. Characteristics The group includes most amoeboids and flagellates that feed by means of filose pseudopods. These may be restricted to part of the cell surface, but there is never a true cytostome or mouth as found in many other protozoa. They show a variety of forms and have proven difficult to define in terms of structural characteristics, although their unity is strongly supported by phylogenetic studies. Diversity Some cercozoans are grouped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imbricatea
Imbricatea is a class of Rhizaria characterised by silica scales. It is sometimes described as "Imbricatea/Silicofilosea", due to the similarity of those two groupings. Imbricatea is divided into the orders Euglyphida and Thaumatomonadida Thaumatomonadida is an order of flagellates 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) characteristi .... Phylogeny Phylogeny based on Cavalier-Smith & Chao 2012 References Cercozoa classes {{Cercozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 eukaryotic group to be recognized mainly through molecular phylogenies. They are the natural predators of many species of microbacteria and Archea. They are closely related to the phylum Retaria, comprising amoeboids that usually have complex shells, and together form a supergroup called Rhizaria. Characteristics The group includes most amoeboids and flagellates that feed by means of filose pseudopods. These may be restricted to part of the cell surface, but there is never a true cytostome or mouth as found in many other protozoa. They show a variety of forms and have proven difficult to define in terms of structural characteristics, although their unity is strongly supported by phylogenetic studies. Diversity Some cercozoans are grouped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
