|
Yelaphomte
''Yelaphomte'' ( Allentiac, "beast of the air") is an extinct genus of non- pterodactyloid pterosaur from the late Norian–early Rhaetian-aged Quebrada del Barro Formation of Argentina. It lived in the Late Triassic period, and is one of the only known definitive Triassic pterosaurs from the southern hemisphere (along with the contemporaneous and related ''Pachagnathus''). It was a small and crested pterosaur, although its small size may be due to immaturity. It is also one of the few known continental Triassic pterosaurs, indicating that the absence of early pterosaurs in both the southern hemisphere and terrestrial environments is likely a sampling bias, and not a true absence. Discovery and naming The type and only known specimen of ''Yelaphomte'', PVSJ 914, was collected during fieldwork by the Museo de Ciencias Naturales of the Universidad Nacional de San Juan from 2012 to 2014. It consists of only a fragment of the rostrum preserving the anterior part of both maxillae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pachagnathus
''Pachagnathus'' ("earth jaw") is an extinct genus of non- pterodactyloid pterosaur from the late Norian–early Rhaetian-aged Quebrada del Barro Formation of Argentina. It lived in the Late Triassic period, and is one of the only known definitive Triassic pterosaurs from the southern hemisphere (along with the contemporaneous and related '' Yelaphomte''). It is also one of the few known continental Triassic pterosaurs, indicating that the absence of early pterosaurs in both the southern hemisphere and terrestrial environments is likely a sampling bias, and not a true absence. Discovery and naming The type and only known specimen of ''Pachagnathus'', PVSJ 1080, was collected during fieldwork by the Museo de Ciencias Naturales of the Universidad Nacional de San Juan from 2012 to 2014. It consists of only a broken portion of the front end of a lower jaw along its mandibular symphysis preserved in three dimensions and undistorted, including a partial tooth crown as well as several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quebrada Del Barro Formation
The Quebrada del Barro Formation is a geological formation of the Marayes-El Carrizal Basin in San Juan Province, Argentina. This formation is the most fossiliferous portion of the Triassic Marayes Group, and is also the youngest unit of the group, overlying the El Carrizal Formation. An unconformity at the top of the Quebrada del Barro Formation separates it from the Cretaceous-age Los Riscos Formation of the El Gigante Group.Gardini et al., 2009, p.554 Part of the formation may be made into a provincial park following the discovery of the fossils of ''Ingentia'', a giant sauropodomorph dinosaur which helped elucidate the early evolution of sauropods. Sedimentology The Quebrada del Barro Formation formed within a rift basin during a period of renewed fracturing. It encompasses of red sandstones, fine conglomerates, and diamictites. Early hypotheses on the depositional environment proposed that the sediments formed in an alluvial fan or braided river system, while a newer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Triassic
The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. The corresponding series (stratigraphy), series of rock beds is known as the Upper Triassic. The Late Triassic is divided into the Carnian, Norian and Rhaetian Geologic time scale, Ages. Many of the first dinosaurs evolved during the Late Triassic, including ''Plateosaurus'', ''Coelophysis'', and ''Eoraptor''. The Triassic–Jurassic extinction event began during this epoch and is one of the five major mass extinction events of the Earth. Etymology The Triassic was named in 1834 by Friedrich August von Namoh, Friedrich von Alberti, after a succession of three distinct rock layers (Greek meaning 'triad') that are widespread in southern Germany: the lower Buntsandstein (colourful sandstone'')'', t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naris
A nostril (or naris , plural ''nares'' ) is either of the two orifices of the nose. They enable the entry and exit of air and other gasses through the nasal cavities. In birds and mammals, they contain branched bones or cartilages called turbinates, whose function is to warm air on inhalation and remove moisture on exhalation. Fish do not breathe through noses, but they do have two (but cyclostomes have merged into one) small holes used for smelling, which can also be referred to as nostrils. In humans, the nasal cycle is the normal ultradian cycle of each nostril's blood vessels becoming engorged in swelling, then shrinking. The nostrils are separated by the septum. The septum can sometimes be deviated, causing one nostril to appear larger than the other. With extreme damage to the septum and columella, the two nostrils are no longer separated and form a single larger external opening. Like other tetrapods, humans have two external nostrils (anterior nares) and two addi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CT Scans
A computed tomography scan (CT scan; formerly called computed axial tomography scan or CAT scan) is a medical imaging technique used to obtain detailed internal images of the body. The personnel that perform CT scans are called radiographers or radiology technologists. CT scanners use a rotating X-ray tube and a row of detectors placed in a gantry to measure X-ray attenuations by different tissues inside the body. The multiple X-ray measurements taken from different angles are then processed on a computer using tomographic reconstruction algorithms to produce tomographic (cross-sectional) images (virtual "slices") of a body. CT scans can be used in patients with metallic implants or pacemakers, for whom magnetic resonance imaging (MRI) is contraindicated. Since its development in the 1970s, CT scanning has proven to be a versatile imaging technique. While CT is most prominently used in medical diagnosis, it can also be used to form images of non-living objects. The 1979 Nob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Name
In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (which may be shortened to just "binomial"), a binomen, name or a scientific name; more informally it is also historically called a Latin name. The first part of the name – the '' generic name'' – identifies the genus to which the species belongs, whereas the second part – the specific name or specific epithet – distinguishes the species within the genus. For example, modern humans belong to the genus ''Homo'' and within this genus to the species ''Homo sapiens''. ''Tyrannosaurus rex'' is likely the most widely known binomial. The ''formal'' introduction of this system of naming species is credit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huarpe
The Huarpes or Warpes are an indigenous people of Argentina, living in the Cuyo region. Some scholars assume that in the Huarpe language, this word means "sandy ground," but according to ''Arte y Vocabulario de la lengua general del Reino de Chile'', written by Andrés Febrés in Lima in 1765, the word ''Cuyo'' comes from Araucanian ''cuyum puulli'', meaning "sandy land" or "desert country". History Huarpe people settled in permanent villages beginning in the 5th century CE. About 50 to 100 people lived in a village, making them smaller than Diaguita settlements. They were agrarian people who grew corn (''Zea mays''), beans, squash, and quinoa (''Chenopodium quinoa'').Lewis 18 Towards the 15th century, Huarpe territory expanded into the current Argentinian provinces of San Luis, Mendoza and San Juan and even on the north of the Neuquen Province. They inhabited between the Jáchal River at north, to the Diamante River at south and between the Andes and Conlara Valley on San ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generic Name (biology)
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below 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 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 of an ancestral taxon are grouped together (i.e. phylogenetic analysis should clearly demonstr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ameghiniana
''Ameghiniana'' is a peer-reviewed scientific journal covering palaeontology published by the Asociación Paleontológica Argentina. It is named after the 19th century Italian Argentine palaeontologist Florentino Ameghino. The discovery of many dinosaurs found in Argentina and South America have first been published in ''Ameghiniana''; examples of this are ''Argentinosaurus'' and ''Herrerasaurus ''Herrerasaurus'' is a genus of saurischian dinosaur from the Late Triassic period. This genus was one of the earliest dinosaurs from the fossil record. Its name means "Herrera's lizard", after the rancher who discovered the first specimen in ...''. Abstracting and indexing The journal is abstracted and indexed in: References External links * Asociación Paleontológica Argentina Paleontology journals Geology of Argentina Publications established in 1957 Multilingual journals Quarterly journals Academic journals published by learned and professional societies of Arge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papers In Palaeontology
The Palaeontological Association (PalAss for short) is a charitable organisation based in the UK founded in 1957 for the promotion of the study of palaeontology and allied sciences. Publications The Association publishes two main journals: ''Palaeontology'' and ''Papers in Palaeontology''. The latter is the successor to the now discontinued ''Special Papers in Palaeontology.'' In addition, the ''Palaeontology Newsletter'' is published 3 times per year, and the '' Field Guides to Fossils'' series covering important palaeontological biotas is published in book form. Awards The Association confers a number of awards, including the Gertrude Elles Award for high-quality public engagement; the Mary Anning Award for outstanding contributions from those not professionally employed in palaeontology; the Hodson Award for exceptional early-career achievement; the President's Medal as a mid-career award; and the organisation's highest award for exceptional lifetime achievement, the Lapw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Gigante Group
EL, El or el may refer to: Religion * El (deity), a Semitic word for "God" People * EL (rapper) (born 1983), stage name of Elorm Adablah, a Ghanaian rapper and sound engineer * El DeBarge, music artist * El Franco Lee (1949–2016), American politician * Ephrat Livni (born 1972), American street artist Arts, entertainment, and media Fictional entities * El, a character from the manga series ''Shugo Chara!'' by Peach-Pit * El, short for Eleven, a fictional character in the TV series ''Stranger Things'' * El, family name of Kal-El (Superman) and his father Jor-El in ''Superman'' *E.L. Faldt, character in the road comedy film ''Road Trip'' Literature * ''Él'', 1926 autobiographical novel by Mercedes Pinto * ''Él'' (visual novel), a 2000 Japanese adult visual novel Music * Él Records, an independent record label from the UK founded by Mike Alway * ''Él'' (Lucero album), a 1982 album by Lucero * "Él", Spanish song by Rubén Blades from ''Caminando'' (album) * "Él" (Lucà ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now- extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
