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Parachela (tardigrade)
Parachela is an order of tardigrades in the class Eutardigrada Eutardigrada are a class of tardigrades (Tardigrada) without lateral appendages. Primarily freshwater bound, some species have secondarily gained the ability to live in marine environments ('' Halobiotus''). By cryptobiosis many species are able .... Members of this order have existed for at least 72 million years, up to the present. The oldest known species are '' Beorn leggi'' and '' Aerobius dactylus''. Superfamilies and families The order includes the following superfamilies and families: * Eohypsiboiidea ** Eohypsibiidae * Hypsibioidea ** Calohypsibiidae ** Hypsibiidae ** Microhypsibiidae ** Ramazzottiidae * Isohypsibioidea ** Hexapodibiidae ** Isohypsibiidae * Macrobiotoidea ** Beornidae ** Macrobiotidae ** Murrayidae ** Necopinatidae ** Richtersiidae References External links * * Ecdysozoa orders Polyextremophiles {{Tardigrade-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypsibius Dujardini
''Hypsibius dujardini sensu lato'' is a species complex of tardigrade in the class Eutardigrada. A member of this complex, ''Hypsibius exemplaris'', is widely used for various research projects pertaining to evolutionary biology and astrobiology. The species was described by Louis Michel François Doyère in 1840 (as ''Macrobiotus dujardini''). ''H. exemplaris'' was differentiated from ''H. dujardini sensu stricto'' in 2018. Earlier studies refer to this lab species from northwest England as ''H. dujardini''. ''H. dujardini s.s.'' is found in France, and has differences in 18S rRNA sequence and morphological details. Habitat The species, ''Hypsibius dujardini'', is a tardigrade that prefers freshwater lakes, rivers, and streams. Because they are considered cosmopolitan, their geographical range is immense. They can be found in regions like the tropics and the poles. Genome sequencing The genome of ''Hypsibius exemplaris'' has been sequenced. ''Hypsibius exemplaris'' has a com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richtersiidae
Richtersiidae is a family of tardigrade Tardigrades (), known colloquially as water bears or moss piglets, are a phylum of eight-legged segmented micro-animals. They were first described by the German zoologist Johann August Ephraim Goeze in 1773, who called them . In 1776, th ...s belonging to the order Parachela. Genera: * '' Adorybiotus'' Maucci & Ramazzotti, 1981 * '' Diaforobiotus'' Guidetti, Rebecchi, Bertolani, Jönsson, Kristensen & Cesari, 2016 * '' Richtersius'' Pilato & Binda, 1989 References {{Taxonbar, from=Q4125805 Parachela (tardigrade) Tardigrade families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necopinatidae
''Necopinatidae'' is a family of water bears or moss piglets, tardigrades in the class Eutardigrada Eutardigrada are a class of tardigrades (Tardigrada) without lateral appendages. Primarily freshwater bound, some species have secondarily gained the ability to live in marine environments ('' Halobiotus''). By cryptobiosis many species are able .... It contains the following species in two genera * '' Apodibius'' ** '' Apodibius confusus'' Dastych, 1983 ** '' Apodibius nuntius'' Binda, 1986 ** '' Apodibius richardi'' Vargha, 1995 ** '' Apodibius serventyi'' Morgan & Nicholls 1986 * '' Necopinatum'' ** '' Necopinatum mirabile'' Pilato, 1971 References External links Parachela (tardigrade) Tardigrade families Polyextremophiles {{tardigrade-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrobiotidae
Macrobiotidae is a family of tardigrades. Phylogeny External phylogeny According to a 2018 report using multiple morphological and molecular studies, the Macrobiotoidea are sister to the Hypsibioidea; both are eutardigrades. The genera '' Adorybiotus'' and '' Richtersius'' were transferred from Macrobiotidae to a new family, Richtersiidae, in 2016. Internal phylogeny A 2021 phylogenetic analysis found that the genus ''Macrobiotus'' is monophyletic (a clade) but that the former genus ''Xerobiotus'' is wholly contained within ''Macrobiotus''. A new genus, '' Sisubiotus'', was created. The genus "'' Minibiotus''" was seen to be paraphyletic Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In co ... with respect to ''Tenuibiotus'' and ''Paramacrobiotus''. Genera , the famil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beornidae
''Beorn'' is an extinct genus of tardigrade and the first known fossil tardigrade, discocered in Late Cretaceous amber from Manitoba, Canada. The genus contains a single species, ''B. leggi'', and it was originally classified as the only member of its family, the Beornidae, but was later reclassified as belonging to the Hypsibiidae. It is one of three fossil tardigrades known from the Cretaceous, the others being '' Milnesium swolenskyi'' from the Turonian New Jersey amber and '' Aerobius'' from the same amber piece as ''Beorn''. The only other confidently known fossil tardigrade is the Miocene '' Paradoryphoribius'' from the Dominican Republic. In addition to some other finds from the Cretaceous and the Cambrian period, ''Beorn'' is an example of the early existence of tardigrades in earth's history, and its largely modern appearance suggests that tardigrades must have diversified considerably before this time. Discovery and naming William M. Legg collected the amber in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
