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Rhizamoeba Polyura
''Rhizamoeba'' is a small genus of free-living marine naked lobose amoebae in the monotypic family Rhizamoebidae in the order Leptomyxida. It is most closely related to '' Leptomyxa'' and '' Flabellula'', and some species have been moved to '' Leptomyxa'' due to molecular data. Morphology Members of ''Rhizamoeba'' are characterized by their morphology when they move, which is usually monopodial (with a single ramification), alternating between a slug-like shape and a fan shape. They have either one nucleus or multiple (less than 50) nuclei. Classification The paraphyly of the genus caused the transfer of two previously rhizamoeban species into '' Leptomyxa'': '' R. australiensis'' and '' R. neglecta''. As a result, only 3 species are currently confirmed as ''Rhizamoeba'': * '' Rhizamoeba saxonica'' * '' Rhizamoeba polyura'' * '' Rhizamoeba matisi'' Other possible species are not yet confirmed due to lack of published data or poor documentation. Some of these are: '' R. schne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizamoeba Polyura
''Rhizamoeba'' is a small genus of free-living marine naked lobose amoebae in the monotypic family Rhizamoebidae in the order Leptomyxida. It is most closely related to '' Leptomyxa'' and '' Flabellula'', and some species have been moved to '' Leptomyxa'' due to molecular data. Morphology Members of ''Rhizamoeba'' are characterized by their morphology when they move, which is usually monopodial (with a single ramification), alternating between a slug-like shape and a fan shape. They have either one nucleus or multiple (less than 50) nuclei. Classification The paraphyly of the genus caused the transfer of two previously rhizamoeban species into '' Leptomyxa'': '' R. australiensis'' and '' R. neglecta''. As a result, only 3 species are currently confirmed as ''Rhizamoeba'': * '' Rhizamoeba saxonica'' * '' Rhizamoeba polyura'' * '' Rhizamoeba matisi'' Other possible species are not yet confirmed due to lack of published data or poor documentation. Some of these are: '' R. schne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptomyxa Australiensis
''Leptomyxa'' is a free-living genus of lobose naked multinucleate amoebae in the order Leptomyxida that inhabits freshwater, soil and mosses. It is very closely related to the genus ''Rhizamoeba'', and some species have been moved between the two genera due to molecular data. Description Members of this genus have loboreticulopodia: wide and smooth cytoplasmic projections (like lobopodia) that can also connect to each other to form a net-like structure (like reticulopodia). They differ from ''Rhizamoeba'' not only on a molecular level but also in their morphology: each ''Leptomyxa'' cell has usually up to hundreds of nuclei, while ''Rhizamoeba'' cells contain between one and up to dozens of nuclei, and the organization of the cell is plasmodial among ''Leptomyxa'' while monopodial among ''Rhizamoeba''. Classification As of 2017, nine species belong to this genus. * '' Leptomyxa ambigua'' * '' Leptomyxa arborea'' * '' Leptomyxa australiensis'' * '' Leptomyxa flabellata'' * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amoeba Clavarioides
An amoeba (; less commonly spelled ameba or amœba; plural ''am(o)ebas'' or ''am(o)ebae'' ), often called an amoeboid, is a type of cell or unicellular organism with the ability to alter its shape, primarily by extending and retracting pseudopods. Amoebae do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms. Amoeboid cells occur not only among the protozoa, but also in fungi, algae, and animals. Microbiologists often use the terms "amoeboid" and "amoeba" interchangeably for any organism that exhibits amoeboid movement. In older classification systems, most amoebae were placed in the class or subphylum Sarcodina, a grouping of single-celled organisms that possess pseudopods or move by protoplasmic flow. However, molecular phylogenetic studies have shown that Sarcodina is not a monophyletic group whose members share common descent. Consequently, amoeboid organisms are no longer classified together in one group.Jan Pawlowski ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichamoeba Clava
''Trichamoeba'' is a genus of Amoebozoa Amoebozoa is a major taxonomic group containing about 2,400 described species of amoeboid protists, often possessing blunt, fingerlike, lobose pseudopods and tubular mitochondrial cristae. In traditional and currently no longer supported classi .... It includes the species '' Trichamoeba villosa''. References Amoebozoa genera {{Amoebozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichamoeba Caerulea
''Trichamoeba'' is a genus of Amoebozoa Amoebozoa is a major taxonomic group containing about 2,400 described species of amoeboid protists, often possessing blunt, fingerlike, lobose pseudopods and tubular mitochondrial cristae. In traditional and currently no longer supported classi .... It includes the species '' Trichamoeba villosa''. References Amoebozoa genera {{Amoebozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Dubium
In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a specimen belongs to that group or not. This may happen if the original type series (i. e. holotype, isotype, syntype or paratype) is lost or destroyed. The zoological and botanical codes allow for a new type specimen, or neotype, to be chosen in this case. A name may also be considered a ''nomen dubium'' if its name-bearing type is fragmentary or lacking important diagnostic features (this is often the case for species known only as fossils). To preserve stability of names, the ''International Code of Zoological Nomenclature'' allows a new type specimen, or neotype, to be chosen for a ''nomen dubium'' in this case. 75.5. Replacement of unidentifiable name-bearing type by a neotype. When an author considers that the taxonomic identity of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizamoeba Schnepfii
''Rhizamoeba'' is a small genus of free-living marine naked lobose amoebae in the monotypic family Rhizamoebidae in the order Leptomyxida. It is most closely related to '' Leptomyxa'' and '' Flabellula'', and some species have been moved to '' Leptomyxa'' due to molecular data. Morphology Members of ''Rhizamoeba'' are characterized by their morphology when they move, which is usually monopodial (with a single ramification), alternating between a slug-like shape and a fan shape. They have either one nucleus or multiple (less than 50) nuclei. Classification The paraphyly of the genus caused the transfer of two previously rhizamoeban species into '' Leptomyxa'': '' R. australiensis'' and '' R. neglecta''. As a result, only 3 species are currently confirmed as ''Rhizamoeba'': * ''Rhizamoeba saxonica'' * ''Rhizamoeba polyura'' * '' Rhizamoeba matisi'' Other possible species are not yet confirmed due to lack of published data or poor documentation. Some of these are: '' R. schnepf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizamoeba Matisi
''Rhizamoeba'' is a small genus of free-living marine naked lobose amoebae in the monotypic family Rhizamoebidae in the order Leptomyxida. It is most closely related to '' Leptomyxa'' and '' Flabellula'', and some species have been moved to '' Leptomyxa'' due to molecular data. Morphology Members of ''Rhizamoeba'' are characterized by their morphology when they move, which is usually monopodial (with a single ramification), alternating between a slug-like shape and a fan shape. They have either one nucleus or multiple (less than 50) nuclei. Classification The paraphyly of the genus caused the transfer of two previously rhizamoeban species into '' Leptomyxa'': '' R. australiensis'' and '' R. neglecta''. As a result, only 3 species are currently confirmed as ''Rhizamoeba'': * ''Rhizamoeba saxonica'' * ''Rhizamoeba polyura'' * '' Rhizamoeba matisi'' Other possible species are not yet confirmed due to lack of published data or poor documentation. Some of these are: '' R. schnepf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizamoeba Saxonica
''Rhizamoeba'' is a small genus of free-living marine naked lobose amoebae in the monotypic family Rhizamoebidae in the order Leptomyxida. It is most closely related to '' Leptomyxa'' and '' Flabellula'', and some species have been moved to '' Leptomyxa'' due to molecular data. Morphology Members of ''Rhizamoeba'' are characterized by their morphology when they move, which is usually monopodial (with a single ramification), alternating between a slug-like shape and a fan shape. They have either one nucleus or multiple (less than 50) nuclei. Classification The paraphyly of the genus caused the transfer of two previously rhizamoeban species into '' Leptomyxa'': '' R. australiensis'' and '' R. neglecta''. As a result, only 3 species are currently confirmed as ''Rhizamoeba'': * '' Rhizamoeba saxonica'' * ''Rhizamoeba polyura'' * '' Rhizamoeba matisi'' Other possible species are not yet confirmed due to lack of published data or poor documentation. Some of these are: '' R. schnep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptomyxa Neglecta
''Leptomyxa'' is a free-living genus of lobose naked multinucleate amoebae in the order Leptomyxida that inhabits freshwater, soil and mosses. It is very closely related to the genus ''Rhizamoeba'', and some species have been moved between the two genera due to molecular data. Description Members of this genus have loboreticulopodia: wide and smooth cytoplasmic projections (like lobopodia) that can also connect to each other to form a net-like structure (like reticulopodia). They differ from ''Rhizamoeba'' not only on a molecular level but also in their morphology: each ''Leptomyxa'' cell has usually up to hundreds of nuclei, while ''Rhizamoeba'' cells contain between one and up to dozens of nuclei, and the organization of the cell is plasmodial among ''Leptomyxa'' while monopodial among ''Rhizamoeba''. Classification As of 2017, nine species belong to this genus. * '' Leptomyxa ambigua'' * '' Leptomyxa arborea'' * ''Leptomyxa australiensis'' * '' Leptomyxa flabellata'' * '' ... [...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] |
Rhizamoeba
''Rhizamoeba'' is a small genus of free-living marine naked lobose amoebae in the monotypic family Rhizamoebidae in the order Leptomyxida. It is most closely related to '' Leptomyxa'' and '' Flabellula'', and some species have been moved to '' Leptomyxa'' due to molecular data. Morphology Members of ''Rhizamoeba'' are characterized by their morphology when they move, which is usually monopodial (with a single ramification), alternating between a slug-like shape and a fan shape. They have either one nucleus Nucleus ( : nuclei) is a Latin word for the seed inside a fruit. It most often refers to: *Atomic nucleus, the very dense central region of an atom * Cell nucleus, a central organelle of a eukaryotic cell, containing most of the cell's DNA Nucl ... or multiple (less than 50) nuclei. Classification The paraphyly of the genus caused the transfer of two previously rhizamoeban species into '' Leptomyxa'': '' R. australiensis'' and '' R. neglecta''. As a result, only 3 spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
