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Kiyacursor PM-2
''Kiyacursor'' (meaning "Kiya River runner") is an extinct genus of noasaurid theropod dinosaur from the Early Cretaceous Ilek Formation of Russia. The genus contains a single species, ''K. longipes'', known from a partial skeleton. ''Kiyacursor'' represents the first Early Cretaceous ceratosaur discovered in Asia, as well as the second non-avian theropod named from Russia, after ''Kileskus'' in 2010. Discovery and naming The ''Kiyacursor'' holotype specimen, KOKM 5542, was discovered in the summer of 2023 in sediments of the Ilek Formation (Shestakovo 1 locality) by the Kiya River in Kemerovo Oblast, Russia. The specimen consists of an incomplete skeleton, including cervical and caudal vertebrae, cervical and dorsal ribs, a left scapulocoracoid, humeri, and much of both articulated hind limbs. A partial cervical vertebra, PIN 329/16, was first described in 2023 by Averianov & Lopatin as belonging to a long-necked theropod similar to basal therizinosauroids like ''Falca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Cretaceous
The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 Megaannum#SI prefix multipliers, Ma to 100.5 Ma. Geology Proposals for the exact age of the Barremian–Aptian boundary ranged from 126 to 117 Ma until recently (as of 2019), but based on drillholes in Svalbard the defining Anoxic event#Cretaceous, early Aptian Oceanic Anoxic Event 1a (OAE1a) was dated to 123.1±0.3 Ma, limiting the possible range for the boundary to c. 122–121 Ma. There is a possible link between this anoxic event and a series of Early Cretaceous large igneous provinces (LIP). The Ontong Java Plateau, Ontong Java-Manihiki Plateau, Manihiki-Hikurangi Plateau, Hikurangi large igneous province, emplaced in the South Pacific at c. 120 Ma, is by far the largest LIP in Earth's history. The Onto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudal Vertebrae
Caudal vertebrae are the vertebrae of the tail in many vertebrates. In birds, the last few caudal vertebrae fuse into the pygostyle, and in apes, including humans, the caudal vertebrae are fused into the coccyx. In many reptiles, some of the caudal vertebrae bear ribs, the caudal ribs, though these are often fused with the vertebrae. The caudal vertebrae often articulate with haemal arches ventrally. The number of caudal vertebrae in animals can vary greatly. Anguid lizards have been reported to have as many as 111 caudal vertebrae, whereas as few as seven are present in the tail of the early therapsid ''Tapinocaninus''. In lepidosaurs and captorhinids, the caudal vertebrae possess fracture planes at mid-length that allow caudal autotomy. In frogs, the few caudal vertebrae are fused together to form part of the urostyle. References Skeletal system Vertebrate anatomy {{vertebrate-anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area around Rome, Italy. Through the expansion of the Roman Republic, it became the dominant language in the Italian Peninsula and subsequently throughout the Roman Empire. It has greatly influenced many languages, Latin influence in English, including English, having contributed List of Latin words with English derivatives, many words to the English lexicon, particularly after the Christianity in Anglo-Saxon England, Christianization of the Anglo-Saxons and the Norman Conquest. Latin Root (linguistics), roots appear frequently in the technical vocabulary used by fields such as theology, List of Latin and Greek words commonly used in systematic names, the sciences, List of medical roots, suffixes and prefixes, medicine, and List of Latin legal terms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Locality (biology)
In biology, a type is a particular wikt:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set (mathematics), set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the ''International Code of Nomenclature for algae, fungi, and plants'' (ICN), the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. 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 of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal scientific description of a newly encountered species, typically articulated through a scientific publication. Its purpose is to provide a clear description of a new species of organism and explain how it differs from species that have been previously described or related species. For a species to be considered valid, a species description must follow established guidelines and naming conventions dictated by relevant nomenclature codes. These include the International Code of Zoological Nomenclature (ICZN) for animals, the International Code of Nomenclature for algae, fungi, and plants (ICN) for plants, and the International Committee on Taxonomy of Viruses (ICTV) for viruses. A species description often includes photographs or other illustrations of type material and information regarding where this material is deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Komsomolskaya Pravda
''Komsomolskaya Pravda'' (; ) is a daily Russian tabloid newspaper that was founded in 1925. Its name is in reference to the official Soviet newspaper '' Pravda'' (English: 'Truth'). History and profile During the Soviet era, ''Komsomolskaya Pravda'' was an all-union newspaper of the Soviet Union and an official organ of the Central Committee of the Komsomol. Established in accordance with a decision of the 13th Congress of the Russian Communist Party (b), it first appeared on 24 May 1925 in an edition of 31,000 copies. ''Komsomolskaya Pravda'' began as the official organ of the Komsomol, the youth wing of the Communist Party of the Soviet Union (CPSU). As such, it targeted the same 14 to 28 demographics as its parent organization, focusing initially on popular science and adventure articles while teaching the values of the CPSU. During this period, it was twice awarded the Order of Red Banner of Labour (in 1950 and 1957) and was also the recipient of the Order of Len ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Nudum
In Taxonomy (biology), taxonomy, a ''nomen nudum'' ('naked name'; plural ''nomina nuda'') is a designation which looks exactly like a scientific name of an organism, and may have originally been intended to be one, but it has not been published with an adequate description. This makes it a "bare" or "naked" name, which cannot be accepted as it stands. A largely equivalent but much less frequently used term is ''nomen tantum'' ("name only"). Sometimes, "''nomina nuda''" is erroneously considered a synonym for the term "unavailable names". However, not all unavailable names are ''nomina nuda'' which applies to published names, ''i.e.'' any published name that does not fulfill the requirements of Article 12 (if published before 1931) or Article 13 (if published after 1930). In zoology According to the rules of zoological nomenclature a ''nomen nudum'' is unavailable name, unavailable; the glossary of the ''International Code of Zoological Nomenclature'' gives this definition: And ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcarius
''Falcarius'' (meaning "sickle cutter") is a genus of primitive therizinosaur dinosaur that lived during the Early Cretaceous period in what is now North America. Its remains were first collected in the Cedar Mountain Formation in 1999, with subsequent findings made during the 2000s. The genus is known from multiple specimens ranging from immature to fully-grown individuals. ''Falcarius'' was a long bipedal herbivore with a small head and an elongated neck and tail. Unlike advanced therizinosaurs, ''Falcarius'' had a propubic pelvis and three-toed feet with a reduced hallux (first digit). ''Falcarius'' is the basal most known definitive therizinosaurian genus, and has been considered a transitional form connecting the typical theropod bodyplan to the unusual morphology of Therizinosauridae. Its description in 2005, following that of the basal therizinosauroid ''Beipiaosaurus'' from the Early Cretaceous of China in 1999, helped clarify the early evolution of the Therizinosauria a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Therizinosauroids
Therizinosaurs (; once called segnosaurs) are an extinct group of large herbivorous theropod dinosaurs whose fossils have been mainly discovered from Cretaceous deposits in Asia and North America. Potential fragmentary remains have also been found in Jurassic deposits of Asia and Europe. Various features of the forelimbs, skull and pelvis unite these finds as both theropods and maniraptorans, making them relatives of birds. The name of the representative genus, ''Therizinosaurus'', is derived from the Greek (, 'to reap' or 'scythe')Translated paper and (, 'lizard'). The older representative, ''Segnosaurus'', is derived from the ('slow') and the Greek . History of research [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basal (phylogenetics)
In phylogenetics, basal is the direction of the ''base'' (or root) of a phylogenetic tree#Rooted tree, rooted phylogenetic tree or cladogram. The term may be more strictly applied only to nodes adjacent to the root, or more loosely applied to nodes regarded as being close to the root. Note that extant taxa that lie on branches connecting directly to the root are not more closely related to the root than any other extant taxa. While there must always be two or more equally "basal" clades sprouting from the root of every cladogram, those clades may differ widely in taxonomic rank, Phylogenetic diversity, species diversity, or both. If ''C'' is a basal clade within ''D'' that has the lowest rank of all basal clades within ''D'', ''C'' may be described as ''the'' basal taxon of that rank within ''D''. The concept of a 'key innovation' implies some degree of correlation between evolutionary innovation and cladogenesis, diversification. However, such a correlation does not make a given ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontological Institute, Russian Academy Of Sciences
The Paleontological Institute, Russian Academy of Sciences (PIN; ) in Moscow is among a paleontological institute. An affiliate of the Russian Academy of Sciences, it includes collections from all over the former Soviet Union, as well as from other countries. Museum The Museum of Paleontology named after Yuri Alexandrovich Orlov is run by the institute, and contains public exhibits. During World War II, the museum operated under a skeleton staff between 1941 and 1943 as the threat of the Battle of Moscow anticipated an invasion by the German army. Some specimens were packed up to prevent damage or destruction in air raids. Notable staff * Evgeny Maleev * Ivan Yefremov, Ivan Efremov * Alexey Bystrow * Tatiana Dobrolyubova * Boris Sergeyevich Sokolov, Boris Sokolov * Kirill Eskov * Alexandr Pavlovich Rasnitsyn, Alexandr Rasnitsyn References External links Laboratory of Arthropods at the University of California Museum of Paleontology website {{authority control Pale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
