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Proteomyxidea
Proteomyxidea is a class of Cercozoa. Although it is known to be paraphyletic In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and most of its descendants, excluding a few monophyletic subgroups. The group is said to be paraphyletic ''with respect to'' the excluded subgroups. In ..., further research is needed before its classification can be improved. References External links Cercozoa classes {{Cercozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proteomyxidea
Proteomyxidea is a class of Cercozoa. Although it is known to be paraphyletic In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and most of its descendants, excluding a few monophyletic subgroups. The group is said to be paraphyletic ''with respect to'' the excluded subgroups. In ..., further research is needed before its classification can be improved. References External links Cercozoa classes {{Cercozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reticulosida
Reticulosida is an order of Cercozoa that was created by Cavalier-Smith in 2003, but subsequently emended in by Bass et al. in 2009 to include only one monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ... family, the Filoretidae. Taxonomy * Order Reticulosida Cavalier-Smith 2003 emend. Bass et al. 2009 ** Family Filoretidae Cavalier-Smith & Bass 2009 *** Genus '' Filoreta'' Bass & Cavalier-Smith 2009 **** Species '' F. marina'' Bass & Cavalier-Smith 2009 **** Species '' F. tenera'' Bass & Cavalier-Smith 2009 **** Species '' F. turcica'' Bass & Cavalier-Smith 2009 **** Species '' F. japonica'' Bass & Cavalier-Smith 2009 See also * Gymnophryid References Proteomyxidea Cercozoa orders Monotypic SAR supergroup taxa {{Cercozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vampyrellidae
The family Vampyrellidae is a subgroup of the order Aconchulinida (formerly Vampyrellida) within the phylum Cercozoa. Based on molecular sequence data, the family currently comprises the genus ''Vampyrella'', and maybe several other vampyrellid amoebae (e.g. ''Gobiella''). The cells are naked and characterised by radiating, filose pseudopodia (also referred to as filopodia) and an orange colouration of the main cell body. In former times the family Vampyrellidae contained several genera (e.g. ''Vampyrella'', ''Gobiella'', ''Leptophrys'', ''Platyreta'', ''Theratromyxa'') and was identical with the order Vampyrellida West, 1901, also known under the name "Aconchulinida". However, based on molecular sequence data it seemed reasonable to restrict the family Vampyrellidae to a subgroup (containing the genus ''Vampyrella'') and to establish another family for the genera ''Leptophrys'', ''Platyreta'' and ''Theratromyxa'', namely the Leptophryidae Hess et al., 2012. Characteristics Wh ... [...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] |
Aconchulinida
Aconchulinida is an order of Cercozoa in the subclass Filosia. The outer zone is clear ectoplasm and has many vacuoles. It has a single nucleus. Its size range from 10 to 400 micrometers. It contains few genera, possibly including only ''Penardia'', but usually also considered to encompass all of the Vampyrellidae. References {{Cercozoa-stub Cercozoa orders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ray Lankester
Sir Edwin Ray Lankester (15 May 1847 – 13 August 1929) was a British zoologist.New International Encyclopaedia. An invertebrate zoologist and evolutionary biologist, he held chairs at University College London and Oxford University. He was the third Director of the Natural History Museum, London, and was awarded the Copley Medal of the Royal Society. Life Ray Lankester was born on 15 May 1847 on Burlington Street in London, the son of Edwin Lankester, a coroner and doctor-naturalist who helped eradicate cholera in London, and his wife, the botanist and author Phebe Lankester. Ray Lankester was probably named after the naturalist John Ray: his father had just edited the memorials of John Ray for the Ray Society. In 1855 Ray went to boarding school at Leatherhead, and in 1858 to St Paul's School. His university education was at Downing College, Cambridge, and Christ Church, Oxford; he transferred from Downing, after five terms, at his parents' behest because Christ Church ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudosporida
''Pseudospora'' is a genus of parasitic cercozoans. It includes the species ''Pseudospora volvocis''. Taxonomy * Order Pseudosporida Hibberd 1983 sensu Cavalier-Smith 1993 ** Family Pseudosporidae Kent 1880 emend. Berlese 1888 *** Genus ''Pseudospora'' Cienkowski 1865 non Schiffner 1931 **** Species '' P. aculeata'' Zopf 1884 **** Species '' P. bacillariacearum'' Zopf 'Pseudosporopsis bacillariacearum'' (Zopf) Scherff. 1925**** Species '' P. benedeni'' De Bruyne 1889 **** Species '' P. edax'' De Bruyne 1889 **** Species '' P. eudorini'' Roskin 1927 **** Species '' P. cienkowskiana'' Sorokin 1877 **** Species '' P. leptoderma'' Scherff. 1925 **** Species '' P. lindstedtii'' Hartog 1890 **** Species '' P. maligna'' Zopf 1884 **** Species '' P. maxima'' Sorokin 1877 **** Species '' P. myzocytioides'' Scherff. 1925 **** Species '' P. nitellarum'' Cienkowski **** Species '' P. parasitica'' (Cienkowski 1858) 'Monas parasitica'' Cienkowski 1858**** Species '' P. perforans'' **** Spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class (biology)
In biological classification, class ( la, classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank. It is a group of related taxonomic orders. Other well-known ranks in descending order of size are life, domain, kingdom, phylum, order, family, genus, and species, with class fitting between phylum and order. History The class as a distinct rank of biological classification having its own distinctive name (and not just called a ''top-level genus'' ''(genus summum)'') was first introduced by the French botanist Joseph Pitton de Tournefort in his classification of plants that appeared in his ''Eléments de botanique'', 1694. Insofar as a general definition of a class is available, it has historically been conceived as embracing taxa that combine a distinct ''grade'' of organization—i.e. a 'level of complexity', measured in terms of how differentiated their organ systems are into distinct regions or sub-organs—with a distinct ''type'' of construction, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraphyly
In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and most of its descendants, excluding a few monophyletic subgroups. The group is said to be paraphyletic ''with respect to'' the excluded subgroups. In contrast, a monophyletic group (a clade) includes a common ancestor and ''all'' of its descendants. The terms are commonly used in phylogenetics (a subfield of biology) and in the tree model of historical linguistics. Paraphyletic groups are identified by a combination of synapomorphies and symplesiomorphies. If many subgroups are missing from the named group, it is said to be polyparaphyletic. The term was coined by Willi Hennig to apply to well-known taxa like Reptilia ( reptiles) which, as commonly named and traditionally defined, is paraphyletic with respect to mammals and birds. Reptilia contains the last common ancestor of reptiles and all descendants of that ancestor, including all extant reptiles as well as the extinct synapsids, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protist (journal)
''Protist'' is a peer-reviewed scientific journal focusing on protists. It was founded as ''Archiv für Protistenkunde'' by editor Fritz Shaudinn in 1902, and originally published by Gustav Fischer and later Jena. The journal is now published by Elsevier, and is currently edited by Michael Melkonian (Botanical Institute, University of Cologne). The journal changed its name to ''Protist'' in 1998. Abstracting and indexing The journal is abstracted and indexed in the following bibliographic databases: According to the ''Journal Citation Reports'', the journal has a 2017 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as ... of 2.702. References Further reading * * External links *{{Official, https://www.elsevier.com/journals/protist Publications established in 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
