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Proechiniscus
''Proechiniscus hanneae'' is a species of tardigrade. It is the only species of ''Proechiniscus'', a genus within the family Echiniscidae. The species is endemic to Greenland, where they occur on Disko Island.Brandt, Thomsen, Heide-Jorgensen, Kristensen & Ruhberg, 1999 : The 1998 Danish-German Excursion to Disko Island, West Greenland.' Berichte zur Polarforschung, Bremerhaven, Bundesrepublik Deutschland : Alfred-Wegener-Institut für Polarforschung, no. 330. The species was first described as '' Pseudechiniscus hanneae'' by Børge Petersen in 1951. It was placed in the new genus of ''Proechinscus'' by Reinhardt Møbjerg Kristensen Reinhardt Møbjerg Kristensen (born 1948) is a Danish invertebrate biologist, noted for the discovery of three new phyla of microscopic animals: the Loricifera in 1983, the Cycliophora in 1995, and the Micrognathozoa in 2000. He is also considere ... in 1987. References Further reading *Kristensen, 1987 : ''Generic revision of the Echiniscidae ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echiniscidae
The Echiniscidae are a family of tardigrades, a phylum of water-dwelling, eight-legged, segmented micro-animals. It is one of the four families in the order Echiniscoidea.Echiniscidae The family was named by Gustav Thulin in 1928.Thulin, ''Über die Phylogenie und das System der Tardigraden'' (''On the Phylogeny and the System of Tardigrade''). Hereditas (1928) vol. 11, no. 2/3, p. 207-266 Genera The family Echiniscidae consists of the following genera: * ''[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinhardt Møbjerg Kristensen
Reinhardt Møbjerg Kristensen (born 1948) is a Danish invertebrate biologist, noted for the discovery of three new phyla of microscopic animals: the Loricifera in 1983, the Cycliophora in 1995, and the Micrognathozoa in 2000. He is also considered one of the world's leading experts on tardigrades. His recent field of work revolves mostly around arctic biology. He is also known for documenting '' Dendrogramma'', an invertebrate genus that was later classified as Siphonophorae of the family Rhodaliidae. Loricifera Kristensen collected the first members of the Loricifera phylum in Roscoff, France, in 1970, but did not describe it until 1983.Heiner, I. 2005. Preliminary account of the loriciferan fauna of the Faroe Bank (NE Atlantic). Biofar Proceedings 2005: 213–219. Cycliophora Kristensen and Peter Funch described '' Symbion pandora'', on the mouth-parts of Norwegian lobsters, in 1995; other species were later found on other types of lobsters. Micrognathozoa Kristensen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Kleiner Wasserbär ("little water bear"). In 1777, the Italian biologist Lazzaro Spallanzani named them Tardigrada (), which means "slow steppers". They have been found in diverse regions of Earth's biospheremountaintops, the deep sea, tropical rainforests, and the Antarctic. Tardigrades are among the most resilient animals known, with individual species able to survive extreme conditions – such as exposure to extreme temperatures, extreme pressures (both high and low), air deprivation, radiation, dehydration, and starvation – that would quickly kill most other known forms of life. Tardigrades have survived exposure to outer space. There are about 1,300 known species in the phylum Tardigrada, a part of the superphylum Ecdysozoa consisting of animals th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Modena And Reggio Emilia
The University of Modena and Reggio Emilia ( it, Università degli Studi di Modena e Reggio Emilia), located in Modena and Reggio Emilia, Emilia-Romagna, Italy, is one of the oldest universities in Italy, founded in 1175, with a population of 20,000 students. The medieval university disappeared by 1338 and was replaced by "three public lectureships" which did not award degrees and were suspended in the 1590s "for lack of money". The university was not reestablished in Modena until the 1680s and did not receive an imperial charter until 1685.Quoted from: Grenler, Paul F. The Universities of the Italian Renaissance Johns Hopkins University Press, 2004. Page 137. Some famous students who attended the university include Ludovico Antonio Muratori, a noted Italian historian and scholar who graduated in 1694, the playwright Carlo Goldoni in the 17th century and, in the last century, Sandro Pertini, who became President of the Italian Republic. Brief History The University of Modena da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disko Island
Disko Island ( kl, Qeqertarsuaq, da, Diskoøen) is a large island in Baffin Bay, off the west coast of Greenland. It has an area of ,Norwegian University of Science and Technology making it the second largest of Greenland after the main island and one of the 100 largest islands in the world. Etymology The name means ''The Large Island'' (from = island).Geography 
The island has a length of about , ri ...
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Pseudechiniscus
''Pseudechiniscus'' is a genus of tardigrades in the family Echiniscidae. The genus was named and described by Gustav Thulin in 1911. Species The genus includes the following species: * '' Pseudechiniscus alberti'' Dastych, 1987 * '' Pseudechiniscus asper'' Abe, Utsugi & Takeda, 1998 * '' Pseudechiniscus bartkei'' Węglarska, 1962 * '' Pseudechiniscus beasleyi'' Li, Wang & Yu, 2007 * '' Pseudechiniscus bidenticulatus'' Bartoš, 1963 * '' Pseudechiniscus bispinosus'' (Murray, 1907) * '' Pseudechiniscus brevimontanus'' Kendall-Fite & Nelson, 1996 * '' Pseudechiniscus chengi'' Xue, Li, Wang, Xian & Chen, 2017 * '' Pseudechiniscus clavatus'' Mihelčič, 1955 * '' Pseudechiniscus conifer'' (Richters, 1904) * '' Pseudechiniscus dicrani'' Mihelčič, 1938 * '' Pseudechiniscus facettalis'' Petersen, 1951 * '' Pseudechiniscus gullii'' Pilato & Lisi, 2006 * '' Pseudechiniscus insolitus'' Maucci, 1991 * '' Pseudechiniscus jiroveci'' Bartoš, 1963 * '' Pseudechiniscus juanitae'' de Barro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invertebrates Of Greenland
Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate subphylum Vertebrata. Familiar examples of invertebrates include arthropods, mollusks, annelids, echinoderms and cnidarians. The majority of animal species are invertebrates; one estimate puts the figure at 97%. Many invertebrate taxa have a greater number and variety of species than the entire subphylum of Vertebrata. Invertebrates vary widely in size, from 50 μm (0.002 in) rotifers to the 9–10 m (30–33 ft) colossal squid. Some so-called invertebrates, such as the Tunicata and Cephalochordata, are more closely related to vertebrates than to other invertebrates. This makes the invertebrates paraphyletic, so the term has little meaning in taxonomy. Etymology The word "invertebrate" comes from the Latin word ''vertebra'', which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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