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Viavenator
''Viavenator'' (meaning "road hunter") is a genus of carnivorous abelisaurid theropod dinosaur discovered in Argentina's Bajo de la Carpa Formation. It coexisted with the megaraptoran '' Tratayenia rosalesi''. Classification Filippi classified ''Viavenator'' to a new clade known as the Furileusauria, which includes ''Viavenator'' as well as ''Carnotaurus''. This would have meant ''Viavenator'' was closer to ''Carnotaurus'' than ''Majungasaurus''. It would have been in length. Palaeobiology ''Viavenator'' possessed a similar brain morphology to ''Aucasaurus'', another South American abelisaurid and had a similar inner ear. Compared to the Madagascan abelisaurid ''Majungasaurus'', ''Viavenator'' was more reliant more on quick movements of the head and sophisticated gaze stabilization mechanisms; however, both genera had a similar range of hearing according to the examinations and subsequent CT scans of the cranium. See also * Timeline of ceratosaur research * 2016 in pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viavenator Size
''Viavenator'' (meaning "road hunter") is a genus of carnivorous abelisaurid theropod dinosaur discovered in Argentina's Bajo de la Carpa Formation. It coexisted with the megaraptoran '' Tratayenia rosalesi''. Classification Filippi classified ''Viavenator'' to a new clade known as the Furileusauria, which includes ''Viavenator'' as well as '' Carnotaurus''. This would have meant ''Viavenator'' was closer to '' Carnotaurus'' than '' Majungasaurus''. It would have been in length. Palaeobiology ''Viavenator'' possessed a similar brain morphology to ''Aucasaurus'', another South American abelisaurid and had a similar inner ear. Compared to the Madagascan abelisaurid '' Majungasaurus'', ''Viavenator'' was more reliant more on quick movements of the head and sophisticated gaze stabilization mechanisms; however, both genera had a similar range of hearing according to the examinations and subsequent CT scans of the cranium. See also * Timeline of ceratosaur research * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bajo De La Carpa Formation
The Bajo de la Carpa Formation is a geologic formation of the Neuquén Basin that crops out in northern Patagonia, in the provinces of Río Negro and Neuquén, Argentina. It is the oldest of two formations belonging to the Río Colorado Subgroup within the Neuquén Group. Formerly, that subgroup was treated as a formation, and the Bajo de la Carpa Formation was known as the Bajo de la Carpa Member.Sánchez ''et al.'', 2006 At its base, this formation conformably overlies the Plottier Formation of the older Río Neuquén Subgroup, and it is in turn overlain by the Anacleto Formation, the youngest and uppermost formation of the Neuquén Group. The Bajo de la Carpa Formation can reach in thickness in some locations, and consists mainly of sandstones of various colors, all of fluvial origin, with thin layers of mudstone and siltstone in between. Geological features such as geodes, chemical nodules, impressions of raindrops, and paleosols (fossil soils) are commonly found in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachyrostrans
Carnotaurinae is a subfamily of the theropod dinosaur family Abelisauridae. It includes the dinosaurs ''Aucasaurus'' (from Argentina), ''Carnotaurus'' (from Argentina). The group was first proposed by American paleontologist Paul Sereno in 1998, defined as a clade containing all abelisaurids more closely related to ''Carnotaurus'' than to ''Majungasaurus''. Classification *Subfamily Carnotaurinae **Brachyrostra ***''Ekrixinatosaurus'' (Argentina) ***''Elemgasem'' (Argentina) ***''Guemesia'' (Argentina) ***''Ilokelesia'' (Argentina) ***''Skorpiovenator'' (Argentina) ***''Thanos'' (Brazil) ***Furileusauria ****?'' Niebla'' (Argentina) ****''Llukalkan'' (Argentina) ****'' Viavenator'' (Argentina) ****''Pycnonemosaurus'' (Brazil) ****''Quilmesaurus'' (Argentina) ****Carnotaurini *****''Carnotaurus'' (Argentina) *****Abelisaurinae ******''Aucasaurus'' (Argentina) ******''Abelisaurus'' (Argentina) Phylogeny In 2008, Canale ''et al.'' published a phylogenetic analysis focusing on th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Furileusauria
Furileusauria ("stiff back lizards") is an extinct clade of derived abelisaurid dinosaurs only known from South American fossil remains. They represent some of the largest members of the Abelisauridae, with an average length of . The clade is defined as the most inclusive clade containing '' Carnotaurus sastrei'' but not '' Ilokelesia aguadagrandensis'', ''Skorpiovenator bustingorryi,'' or '' Majungasaurus crenatissimus''. Classification Distinguishing traits Furileusauria is distinguished by several traits exclusive to the members of this clade. These are: * the presence of a tip in the middle area of the posterior surface of the ventral process of the postorbital * the presence of a knob followed by a deep notch in the postorbital- squamosal contact * the absence of fenestra between the frontal, postorbital and lacrimal * an anterior projection of the distal end of the cervical epiphophyses * the posterior margin of the postzygapophyses at level with the intervert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Ceratosaur Research
This timeline of ceratosaur research is a chronological listing of events in the history of paleontology focused on the ceratosaurs, a group of relatively primitive, often horned, predatory theropod dinosaurs that became the apex predators of the southern hemisphere during the Late Cretaceous. The nature and taxonomic composition of the Ceratosauria has been controversial since the group was first distinguished in the late 19th century. In 1884 Othniel Charles Marsh described the new genus and species ''Ceratosaurus nasicornis'' from the Late Jurassic Morrison Formation of the western United States. He felt that it belonged in a new family that he called the Ceratosauridae. He created the new taxon Ceratosauria to include both the Ceratosauridae and the ostrich-like ornithomimids. The idea of the Ceratosauria was soon contested, however. Later that same decade both Lydekker and Marsh's hated rival Edward Drinker Cope argued that the taxon was invalid. The idea of the Ceratos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tratayenia
''Tratayenia'' is an extinct genus of megaraptoran theropod dinosaurs known from remains found in the Santonian-age Bajo de la Carpa Formation of Argentina. The type and only species, ''Tratayenia rosalesi'', was described in March 2018. ''Tratayenia'' can be distinguished from other megaraptorans on the basis of three autapomorphies (unique derived features) of the front portion of each dorsal vertebra, as well as a single autapomorphy of the sacrum. ''Tratayenia'' is one of the youngest known genera of megaraptorans, having lived only about 83 million years ago. Discovery and naming The holotype consists of a well-preserved partial skeleton, MUCPv 1162, which includes several articulated portions of the backbone. One portion of the skeleton is a string of five dorsal vertebrae, likely the seventh to eleventh dorsals. The largest articulated portion of the skeleton is a string of vertebrae including the last two dorsals as well as the five sacrals and much of the right ilium. O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abelisaurid
Abelisauridae (meaning "Abel's lizards") is a family (or clade) of ceratosaurian theropod dinosaurs. Abelisaurids thrived during the Cretaceous period, on the ancient southern supercontinent of Gondwana, and today their fossil remains are found on the modern continents of Africa and South America, as well as on the Indian subcontinent and the island of Madagascar. Isolated teeth were found in the Late Jurassic of Portugal, and the Late Cretaceous genera '' Tarascosaurus'' and ''Arcovenator'' have been described in France. Abelisaurids first appear in the fossil record of the early middle Jurassic period, and at least two genera (the Moroccan '' Chenanisaurus'' and the Madagascan ''Majungasaurus'') survived until the end of the Mesozoic era 66 million years ago. Like most theropods, abelisaurids were carnivorous bipeds. They were characterized by stocky hind limbs and extensive ornamentation of the skull bones, with grooves and pits. In many abelisaurids, such as ''Carnotaurus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santonian
The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya (million years ago) and 83.6 ± 0.7 mya. The Santonian is preceded by the Coniacian and is followed by the Campanian.Gradstein ''et al.'' (2004) Stratigraphic definition The Santonian Stage was established by French geologist Henri Coquand in 1857. It is named after the city of Saintes in the region of Saintonge, where the original type locality is located. The base of the Santonian Stage is defined by the appearance of the inoceramid bivalve '' Cladoceramus undulatoplicatus''. The GSSP (official reference profile) for the base of the Santonian Stage is located near Olazagutia, Spain; it was ratified by the Subcommission on Cretaceous Stratigraphy in 2012. The Santonian's top (the base of the Campanian Stage) is informally marked by the extinction of the crinoid '' Marsup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Argentina
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 by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous Dinosaurs Of South America
Late may refer to: * LATE, an acronym which could stand for: ** Limbic-predominant age-related TDP-43 encephalopathy, a proposed form of dementia ** Local-authority trading enterprise, a New Zealand business law ** Local average treatment effect, a concept in econometrics Music * ''Late'' (album), a 2000 album by The 77s * Late!, a pseudonym used by Dave Grohl on his '' Pocketwatch'' album * Late (rapper), an underground rapper from Wolverhampton * "Late" (song), a song by Blue Angel * "Late", a song by Kanye West from ''Late Registration'' Other * Late (Tonga), an uninhabited volcanic island southwest of Vavau in the kingdom of Tonga * "Late" (''The Handmaid's Tale''), a television episode * LaTe, Oy Laivateollisuus Ab, a defunct shipbuilding company * Late may refer to a person who is Dead Death is the irreversible cessation of all biological functions that sustain an organism. For organisms with a brain, death can also be defined as the irreversible cessation of fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santonian Life
The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya (million years ago) and 83.6 ± 0.7 mya. The Santonian is preceded by the Coniacian and is followed by the Campanian.Gradstein ''et al.'' (2004) Stratigraphic definition The Santonian Stage was established by French geologist Henri Coquand in 1857. It is named after the city of Saintes in the region of Saintonge, where the original type locality is located. The base of the Santonian Stage is defined by the appearance of the inoceramid bivalve '' Cladoceramus undulatoplicatus''. The GSSP (official reference profile) for the base of the Santonian Stage is located near Olazagutia, Spain; it was ratified by the Subcommission on Cretaceous Stratigraphy in 2012. The Santonian's top (the base of the Campanian Stage) is informally marked by the extinction of the crinoid '' Marsupite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2016 In Paleontology
Flora Plants Fungi Cnidarians Research * '' Yunnanoascus haikouensis'', previously thought to be a member of Ctenophora, is reinterpreted as a crown-group medusozoan by Han ''et al.'' (2016). * A study on the fossil corals from the Late Triassic (Norian) outcrops in Antalya Province (Turkey), indicating that the corals lived in symbiosis with photosynthesizing dinoflagellate algae, is published by Frankowiak ''et al.'' (2016). New taxa Arthropods Bryozoans Brachiopods Molluscs Echinoderms Conodonts Fishes Amphibians Research * A study on the histology and growth histories of the humeri of the specimens of '' Acanthostega'' recovered from the mass-death deposit of Stensiö Bjerg (Greenland) is published by Sanchez ''et al.'' (2016), who argue that even the largest individuals from this deposit are juveniles. * Fossils of a tetrapod resembling ''Ichthyostega'' and a probable whatcheeriid- grade tetrapod are described from two Devonian (Famennian) localit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
