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Milnesium Swolenskyi
''Milnesium swolenskyi'' is a species of tardigrade from the Cretaceous period. It, ''Beorn'' and '' Paradoryphoribius'' are the only known tardigrade genera in the fossil record. The type specimen AMNH NJ-796 was found in Turonian New Jersey amber New Jersey Amber, sometimes called Raritan amber, is amber found in the Raritan and Magothy Formations of the Central Atlantic (Eastern) coast of the United States. It is dated to the Late Cretaceous, Turonian age, based on pollen analysis of th ..., from about 93.9 to 89.8 million years ago (mya). References Literature # Guidetti R, Bertolani R (2005) Tardigrade taxonomy: an updated check list of the taxa and a list of characters for their identification. Zootaxa 845: 1-46 # Penney D. Biodiversity of Fossils in Amber from the Major World Deposits, Siri Scientific Press, 2010 - 304 pp. Fossil taxa described in 2000 Apochela {{tardigrade-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turonian
The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous Epoch, or a stage in the Upper Cretaceous Series. It spans the time between 93.9 ± 0.8 Ma and 89.8 ± 1 Ma (million years ago). The Turonian is preceded by the Cenomanian Stage and underlies the Coniacian Stage. At the beginning of the Turonian an oceanic anoxic event (OAE 2) took place, also referred to as the Cenomanian-Turonian boundary event or the "Bonarelli Event". Stratigraphic definition The Turonian (French: ''Turonien'') was defined by the French paleontologist Alcide d'Orbigny (1802–1857) in 1842. Orbigny named it after the French city of Tours in the region of Touraine (department Indre-et-Loire), which is the original type locality. The base of the Turonian Stage is defined as the place where the ammonite species '' Watinoceras devonense'' first appears in the stratigraphic column. The official reference profile (the GSSP) for the base of the Turonian is located in the Roc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milnesium
''Milnesium'' is a genus of tardigrades. It is rather common, being found in a wide variety of habitats across the world. It has a fossil record extending back to the Cretaceous, the oldest species found so far (''M. swolenskyi'') is known from Turonian stage deposits on the east coast of the United States. Species Described species include: * ''Milnesium alabamae'' Wallendorf & Miller, 2009 *''Milnesium almatyense'' Tumanov, 2006 * ''Milnesium alpigenum'' Ehrenberg, 1853 *''Milnesium antarcticum'' Tumanov, 2006 * ''Milnesium argentinum'' Roszkowska, Ostrowska & Kaczmarek, 2015 *''Milnesium asiaticum'' Tumanov, 2006 * ''Milnesium barbadosense'' Meyer & Hinton, 2012 * ''Milnesium beasleyi'' Kaczmarek, Jakubowska & Michalczyk, 2012 * ''Milnesium beatae'' Roszkowska, Ostrowska & Kaczmarek, 2015 * ''Milnesium berladnicorum'' Ciobanu, Zawierucha, Moglan & Kaczmarek, 2014 * ''Milnesium bohleberi'' Bartels, Nelson, Kaczmarek & Michalczyk, 2014 *''Milnesium brachyungue'' Binda & Pilato, ... [...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] |
Beorn (tardigrade)
''Beorn leggi'' is an extinct species of tardigrades, and the known first fossil tardigrade, discovered and described in 1964 from Late Cretaceous amber from Manitoba, Canada. It is the only species in the genus ''Beorn'', and family Beornidae. It is one of two fossil tardigrades known from the Cretaceous, the other being '' Milnesium swolenskyi'' from the Turonian New Jersey amber In addition to some other finds from the Cretaceous and the Cambrian period, Beorn is one of the few references to the existence of tardigrades in the history of the earth, and its largely modern appearance shows that tardigrades must have diversified considerably before this time. The species was first described in 1964 by Kenneth W. Cooper, the typological specimen is now in the Museum of Comparative Zoology at Harvard University. The generic name ''Beorn'' was chosen by Cooper in reference to a figure of the same name from the children's book The Hobbit by J. R. R. Tolkien, which can occur both i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paradoryphoribius
''Paradoryphoribius'' is an extinct genus of tardigrades from the order Parachela (tardigrade), Parachela. It is the third fossil tardigrade to be named, described in 2021 from Miocene Dominican amber from the Dominican Republic. The type, and currently only species, is ''P. chronocaribbeus''. ''Paradoryphoribius'' is the first extinct tardigrade known from the Cenozoic and is also the first tardigrade known from the Miocene. It has a length of 539 microns. References Fossil taxa described in 2021 Tardigrade genera Parachaela {{Tardigrade-stub Dominican amber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Jersey Amber
New Jersey Amber, sometimes called Raritan amber, is amber found in the Raritan and Magothy Formations of the Central Atlantic (Eastern) coast of the United States. It is dated to the Late Cretaceous, Turonian age, based on pollen analysis of the host formations. It has been known since the 19th century, with several of the old clay-pit sites now producing many specimens for study. It has yielded a number of organism fossils, including fungi, plants, tardigrades, insects and feathers. The first identified Cretaceous age ant was described from a fossil found in New Jersey in 1966. Occurrence Though named after New Jersey, the fossil-bearing strata of the Raritan and overlying Magothy formations are also exposed in several neighboring U.S. states, including Maryland through south and central New Jersey, across Staten Island and Long Island (coastal areas of New York state), to a northern exposure at Martha's Vineyard, an island of Massachusetts. Of the two formations that New Je ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil Taxa Described In 2000
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
