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Lapparentosaurus
''Lapparentosaurus'' is a genus of sauropod dinosaur from the Middle Jurassic. Its fossils were found in Madagascar (Isalo III Formation). The type species is ''L. madagascariensis''. Discovery and naming In 1895 Richard Lydekker named a new species of ''Bothriospondylus'', ''B. madagascariensis'' based on fossils found before 1894 by Joseph Thomas Last in the Majunga Basin in layers of the Bathonian, the Isalo III Formation. Because there was no real connection with this English form, in 1986 José Fernando Bonaparte named a separate genus. The type species, the only known, is ''Lapparentosaurus madagascariensis''. The generic name honours Albert-Félix de Lapparent. The holotype assigned by Bonaparte, MAA 91-92, consists of two neural arches. Much more abundant material has been referred, from at least three but perhaps as much as ten individuals from different growth stages. This includes vertebrae and limb elements but no skulls. The species is still lacking a good descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isalo III Formation
The Isalo III Formation is a geological formation in Madagascar, off the eastern coast of Africa. It dates back to the Middle Jurassic.Weishampel et al., 2004, pp.542-543 The use of the term "Isalo III" is somewhat controversial as the two prior units Isalo I and II are Triassic cross-bedded sandstone units that form a continuous depositional sequence, while the "Isalo III" sandstones are not part of the same depositional sequence, and were deposited considerably later. and are perhaps better treated as part of several separate formations.Geiger et al., 2004 It is traditionally divided into two subunits the lower, Bajocian aged Isalo IIIa unit also known as the Beronono Formation and the upper, Bathonian aged Isalo IIIb unit also known as the Sakaraha Formation or Sakahara Formation. The Sakaraha Formation consists of sandstones, marls and carbonates and represents a coastal plain environment, and is laterally equivalent to the predominantly carbonate Bemaraha Formation, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Narindasaurus
''Narindasaurus'' (meaning "lizard of Narinda Bay") is a genus of turiasaurian sauropod dinosaur from the Middle Jurassic Isalo III Formation of Madagascar. The type species, ''N. thevenini'' was formally described by Royo-Torres ''et al.'' in 2020. The holotype, which consists of one specimen, is currently stored at the Muséum national d’Histoire naturelle and has been since 1906 or 1907. Discovery and naming The holotype was discovered in the Isalo III Formation before 1894 by Joseph Thomas Last, and were briefly noted on by Paul Lemoine in 1906.Lemoine P. 1906. Études géologiques dans le nord de Madagascar. In: Herman A, ed. Contributions à l’histoire géologique de l’Océan Indien. ''Paris: Librairie Scientifique'', 1–520. Armand Thevenin (1861-1942) was the first to diagnose ''Narindasaurus''. In 1907, he placed it within the now obsolete species "'' Bothriospondylus madagascariensis''", which is now known as ''Lapparentosaurus ''Lapparentosaurus'' is a g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bothriospondylus
''Bothriospondylus'' ("excavated vertebra") is a dubious genus of neosauropod sauropod dinosaur. It lived during the Late Jurassic. Discovery and naming The type species, ''Bothriospondylus suffossus'', was described by Richard Owen in 1875. The specific epithet ''suffossus'' means "undermined" in Latin, a reference to the fact that pleurocoels had hollowed out the sides of the vertebra. It is often incorrectly spelled as "suffosus". Owen based the species on holotype NHMUK R.44592-5, a set of four dorsal vertebrae found in Wiltshire in stratum from the Kimmeridgian, the Kimmeridge Clay. Also three unfused sacral vertebrae were referred. At the same time Owen named three other species of ''Bothriospondylus''. ''B. robustus'' was based on NHMUK R.22428, a dorsal from the same location. ''B. elongatus'' was based on a vertebra from Sussex, NHMUK R.2239, an original syntype of ''Ornithopsis hulkei''. Finally, '' Bothriospondylus magnus'' was a new name for another syntype of ''Ornit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cetiosauridae
Cetiosauridae is a family of sauropod dinosaurs which was first proposed by Richard Lydekker in 1888. While traditionally a wastebasket taxon containing various unrelated species, some recent studies have found that it may represent a natural clade. Alongside ''Cetiosaurus'' from the Middle Jurassic of Britain, other taxa recently assigned to the family include ''Lapparentosaurus'' from the Middle Jurassic of Madagascar, and ''Patagosaurus'' from the late Early-Middle Jurassic of Patagonia, which share autapomorphies with ''Cetiosaurus'' that are not shared by other eusauropods. Additionally, at least one study has suggested that the mamenchisaurids Mamenchisauridae is a family of sauropod dinosaurs belonging to Eusauropoda known from the Jurassic and Early Cretaceous of Asia and Africa. Some members of the group reached gigantic sizes, amongst the largest of all sauropods. Classification T ... may represent a sub-group of the cetiosaurids, which would be termed Mamenchisau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macronarians
Macronaria is a clade of sauropod dinosaurs. Macronarians are named after the large diameter of the nasal opening of their skull, known as the external naris, which exceeded the size of the orbit, the skull opening where the eye is located (hence ''macro''- meaning large, and –''naria'' meaning nose). Fossil evidence suggests that macronarian dinosaurs lived from the Middle Jurassic (Bathonian) through the Late Cretaceous (Maastrichtian). Macronarians have been found globally, including discoveries in Argentina, the United States, Portugal, China, and Tanzania. Like other sauropods, they are known to have inhabited primarily terrestrial areas, and little evidence exists to suggest that they spent much time in coastal environments. Macronarians are diagnosed through their distinct characters on their skulls, as well as appendicular and vertebral characters. Macronaria is composed of several subclades and families notably including Camarasauridae and Titanosauriformes, among severa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Age Determination Of Dinosaurs
Age determination in dinosaurs is mainly used to determine the approximate age of a dinosaur when the animal died. History Early attempts to estimate the longevity of dinosaurs used allometric scaling principles. Ages were determined by dividing individual mass estimates by rates of growth for similar, extant taxa. For very large individuals, growth rates were extrapolated to dinosaur proportions using regression analysis. The results of these investigations have been extremely variable as they depend on mass estimates and growth rates that are highly at odds with one another. For example, longevity estimates for the sauropod '' Hypselosaurus priscus'' range from a few decades to several hundred years. However, it has been shown that most dinosaur bones have growth lines that are visible in thin sectioned material viewed under a polarized light source. Growth lines Two types of growth lines exist: '' annuli'', and ''lines of arrested growth'' (LAGs).Francillion-Viellot H., ''et al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert-Félix De Lapparent
Albert-Félix de Lapparent (1905–1975) was a French palaeontologist. He was also a Sulpician priest. He undertook a number of fossil-hunting explorations in the Sahara desert. He contributed greatly to our knowledge of dinosaurs and other prehistoric creatures. In 1986, José Bonaparte named the dinosaur ''Lapparentosaurus'' in his honour. Dinosaurs named by Lapparent were ''Inosaurus tedreftensis'' (Lapparent, 1960) and '' Lusitanosaurus liassicus'' (Lapparent and Zbyszewski, 1957). New species of known genera are also credited to him. In alphabetical order, they are: '' Apatosaurus alenquerensis'' (Lapparent and Zbyszewski, 1957), '' Astrodon pusillus'' (Lapparent and Zbyszewski, 1957), '' Brachiosaurus atalaiensis '' (Lapparent and Zbyszewski, 1957), '' Brachiosaurus nougaredi'' (Lapparent, 1960), ''Cetiosaurus mogrebiensis'' (Lapparent, 1955), '' Elaphrosaurus gautieri'' (Lapparent, 1960), '' Elaphrosaurus iguidiensis'' (Lapparent, 1960), '' Megalosaurus pombali'' (Lapparent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
José Bonaparte
José Fernando Bonaparte (14 June 1928 – 18 February 2020) was an Argentine paleontologist who discovered a plethora of South American dinosaurs and mentored a new generation of Argentine paleontologists . One of the best-known Argentine paleontologists, he has been described by paleontologist Peter Dodson as "almost singlehandedly ... responsible for Argentina becoming the sixth country in the world in kinds of dinosaurs". Biography Bonaparte was the son of an Italian sailor, with no close connection to Napoleon's House of Bonaparte. He was born in Rosario, Santa Fe, Argentina, and grew up in Mercedes, Buenos Aires. Despite a lack of formal training in paleontology, he started collecting fossils with many friends at an early age, and created a museum in their home town. He later became the curator of the National University of Tucumán, where he was named ''Doctor Honoris causa'' in 1976, and then in the late 1970s became a senior scientist at the Museo Argentino de Cienci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Jurassic Sauropods
Middle or The Middle may refer to: * Centre (geometry), the point equally distant from the outer limits. Places * Middle (sheading), a subdivision of the Isle of Man * Middle Bay (other) * Middle Brook (other) * Middle Creek (other) * Middle Island (other) * Middle Lake (other) * Middle Mountain, California * Middle Peninsula, Chesapeake Bay, Virginia * Middle Range, a former name of the Xueshan Range on Taiwan Island * Middle River (other) * Middle Rocks, two rocks at the eastern opening of the Straits of Singapore * Middle Sound, a bay in North Carolina * Middle Township (other) * Middle East Music *Middle (song), "Middle" (song), 2015 *The Middle (Jimmy Eat World song), "The Middle" (Jimmy Eat World song), 2001 *The Middle (Zedd, Maren Morris and Grey song), "The Middle" (Zedd, Maren Morris and Grey song), 2018 *"Middle", a song by Rocket from the Crypt from their 1995 album ''Scream, Dracula, Scream!'' *"The Middle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vouivria
''Vouivria'' is a genus of herbivorous sauropod dinosaur, belonging to the Brachiosauridae, that lived in the area of present France during the Late Jurassic. The type species is ''Vouivria damparisensis''. History In 1926, the Solvay company began to exploit a chalkstone quarry at Belvoye, near Damparis in Franche-Comté. In April 1934, workers noticed the presence of large fossil bones in the southeastern face of the quarry. A scapula was shown to foreman Koehret who notified the company engineers Verhas and Chardin. They advised director Étienne Haerens to immediately excavate the marl lens containing the remains. Paleontologists Jean Piveteau and Raymond Ciry were asked to supervise this effort. The excavation started in May and was finished on 22 June 1934.Lapparent, A.-F. de, 1943, "Les dinosauriens jurassiques de Damparis (Jura)", ''Mémoires de la Société Géologique de France (Nouvelle Série)'' 47: 1-20 The same year, baron Jean de Dorlodot published an article ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sauropods Of Africa
Sauropoda (), whose members are known as sauropods (; from '' sauro-'' + '' -pod'', 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their body), and four thick, pillar-like legs. They are notable for the enormous sizes attained by some species, and the group includes the largest animals to have ever lived on land. Well-known genera include ''Brachiosaurus'', ''Diplodocus'', ''Apatosaurus'' and ''Brontosaurus''. The oldest known unequivocal sauropod dinosaurs are known from the Early Jurassic. ''Isanosaurus'' and ''Antetonitrus'' were originally described as Triassic sauropods, but their age, and in the case of ''Antetonitrus'' also its sauropod status, were subsequently questioned. Sauropod-like sauropodomorph tracks from the Fleming Fjord Formation (Greenland) might, however, indicate the occurrence of the group in the Late Triassic. By the Late Jurassic (150 million yea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cetiosaurus
''Cetiosaurus'' () meaning 'whale lizard', from the Greek '/ meaning 'sea monster' (later, 'whale') and '/ meaning 'lizard', is a genus of herbivorous sauropod dinosaur from the Middle Jurassic Period, living about 168 million years ago in what is now Europe. ''Cetiosaurus'' was in 1842 the first sauropod from which bones were described and is the most complete sauropod found in England. It was so named because its describer, Sir Richard Owen, supposed it was a marine creature, initially an extremely large crocodile, and did not recognise it for a land-dwelling dinosaur. Because of the early description many species would be named in the genus, eventually eighteen of them. Most of these have now been placed in other genera or are understood to be dubious names, based on poor fossil material. The last is true also of the original type species, ''Cetiosaurus medius'', and so ''C. oxoniensis'' was officially made the new type species in 2014. ''C. oxoniensis'' is based on three mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
