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Luoyanggia
''Luoyanggia'' (meaning "from Luoyang") is a genus of oviraptorid dinosaur known from the Early Cretaceous Haoling Formation of the Ruyang Basin in Henan Province, central China. The type species is ''L. liudianensis''.Lü., J., Xu, L., Jiang, X., Jia, S., Li, M., Yuan, C., Zhang, X. and Ji, Q. (2009). "A preliminary report on the new dinosaurian fauna from the Cretaceous of the Ruyang Basin, Henan Province of central China." ''Journal of the Palaeontological Society of Korea'', 25: 43-56. Holtz estimated it at 1.5 meters (5 ft) and around 2.27-9.1 kg (5-20 lbs). Molina-Pérez and Larramendi gave a similar size of 1.2 meters (4 ft) and 8.5 kg (18.7 lbs). Paleobiology Non-avian dinosaurs that co-existed with ''Luoyanggia'' included ''Ruyangosaurus'', ''Zhongyuansaurus'', ''Yunmenglong'', ''Xianshanosaurus'', and ''"Huanghetitan" ruyangensis''. The type horizon of ''Luoyanggia'' was initially thought to date Cenomanian stage of the late Cretaceous period, but extensive fieldwork i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haoling Formation
The Haoling Formation is a Mesozoic geologic formation in the Ruyang Basin of Henan, Province, central China. Dinosaur remains are among the fossils that have been recovered from the formation. The Haoling Formation was originally treated as part of the Mangchuan Formation and considered to be of Paleocene age before being recognized as Mesozoic in age. A 2012 paper divided the Mangchuan into the Xiahedong, Haoling, and Shangdonggou Formations, assigning the dinosaur-bearing horizon to the Haoling Formation and constraining the age of the Haoling as Aptian-Albian based on fieldwork and invertebrate and microfossil assemblages. Paleofauna * '' Luoyanggia liudianensis'' * '' Xianshanosaurus shijiagouensis'' * '' Yunmenglong ruyangensis'' * '' Zhongyuanosaurus luoyangensis'' * '' Ruyangosaurus giganteus'' * ''Huanghetitan ruyangensis'' *Ornithomimidae spp. *Iguanodontia indet. *Carcharodontosauridae indet. See also * List of dinosaur-bearing rock formations ** List of stratigraphic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhongyuansaurus
''Zhongyuansaurus'' (meaning “Zhongyuan lizard”) is a monospecific genus of ankylosaurid dinosaur from Henan that lived during the Early Cretaceous (Aptian-Albian, ~125.0-100.5 Ma) in what is now the Haoling Formation. ''Zhongyuansaurus '' is possibly a junior synonym of ''Gobisaurus'', a basal ankylosaurid from the Ulansuhai Formation of Inner Mongolia. Discovery and naming The type species, ''Zhongyuansaurus luoyangensis'', was named and described in 2007 by Xu and colleagues. The holotype specimen of ''Zhongyuansaurus'', HGM 41HIII-0002, consists of a nearly complete skull, fragments of the lower jaw, a cervical neural spine, dorsal vertebrae, caudal vertebrae, posterior caudal centra, fused distal caudals, ribs, a humerus, both ischia, a pubis, and osteoderms. The specimen was obtained from the Haoling Formation of the Henan Province, Ruyang County. The specimen is currently housed at the Henan Province Geological Museum in China. The generic name, ''Zhongyuansaurus'', i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oviraptorid
Oviraptoridae is a group of bird-like, herbivorous and omnivorous maniraptoran dinosaurs. Oviraptorids are characterized by their toothless, parrot-like beaks and, in some cases, elaborate crests. They were generally small, measuring between one and two metres long in most cases, though some possible oviraptorids were enormous. Oviraptorids are currently known only from the Late Cretaceous of Asia, with the most well-known species and complete specimens found only in the Gobi Desert of Mongolia and northwestern China. Description The most characteristic feature of this group is the skull structure. Oviraptorids had short snouts and very deep mandibles. Some taxa (such as ''Citipati'', ''Corythoraptor'', ''Rinchenia'') had a midline crest on top of the skull, resembling that of a cassowary. Other distinguishing characteristics include a bony spike intruding on the mandibular fenestra, nostrils placed very high and far back on the snout, an extremely thin bony bar beneath the eye, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Oviraptorosaur Research
This timeline of oviraptorosaur research is a chronological listing of events in the history of paleontology focused on the oviraptorosaurs, a group of beaked, bird-like theropod dinosaurs. The early history of oviraptorosaur paleontology is characterized by taxonomic confusion due to the unusual characteristics of these dinosaurs. When initially described in 1924 ''Oviraptor'' itself was thought to be a member of the Ornithomimidae, popularly known as the "ostrich" dinosaurs, because both taxa share toothless beaks. Early caenagnathid oviraptorosaur discoveries like ''Caenagnathus'' itself were also incorrectly classified at the time, having been misidentified as birds. The hypothesis that caenagnathids were birds was questioned as early as 1956 by Romer, but not corrected until Osmolska formally reclassified them as dinosaurs in 1976. Meanwhile, the classification of ''Oviraptor'' as an ornithomimid persisted unquestioned by researchers like Romer and Steel until the early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xianshanosaurus
''Xianshanosaurus'' () is a genus of sauropod dinosaur from the Early Cretaceous (Aptian-Albian) of the Ruyang Basin in Henan Province, China. Its type and only species is ''Xianshanosaurus shijiagouensis''. It was described in 2009 by a team of paleontologists led by Lü Junchang. ''Xianshanosaurus'' may be a titanosaur, and ''Daxiatitan'' may be its closest relative, but its evolutionary relationships remain controversial. Taxonomy ''Xianshanosaurus'' and its type species ''X. shijiagouensis'' were named by Lü Junchang, Xu Li, Jiang Xiaojun, Jia Songhai, Li Ming, Yuan Chongxi, Zhang Xingliao, and Ji Qiang in 2009. The type specimen, accessioned in the Henan Geological Museum, consists of ten caudal vertebrae, a coracoid, a femur, and several ribs. The genus name refers to Xian Mountain (), located near where the holotype was found. Phylogenetic relationships When ''Xianshanosaurus'' was first described, its discoverers noted that it had an unusual mixture of characteristic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruyangosaurus
''Ruyangosaurus'' (Ruyang County lizard) is a genus of titanosauriform sauropod dinosaur recovered from the Early Cretaceous Haoling Formation of China. The type species is ''R. giganteus'', described in 2009 by Lü Junchang ''et al''. Description Along with ''Huanghetitan'' and ''Daxiatitan'', ''Ruyangosaurus'' is among the largest dinosaurs discovered in Cretaceous Asia. In 2016 Gregory S. Paul gave a length of 30 meters (100 ft) and a weight of 50+ tonnes (55 short tons) - making it a 'mega-sauropod'. ''Ruyangosaurus'' was probably about 35 meters (115 ft) long, as evidenced by its 207 cm long femur and 127 cm long right tibia. Classification The describers of ''Ruyangosaurus'' assigned it to Andesauridae. However, Andesauridae is not monophyletic and, as such, is no longer used. Comprehensive phylogenetic analyses of Titanosauriformes conducted by Philip Mannion and colleagues in 2013 found ''Ruyangosaurus'' to be in a polytomy with ''Andesaurus'' and other basal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Cretaceous
The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 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 early Aptian Oceanic Anoxic Event 1a (OAE1a) was carbon isotope 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-Manihiki-Hikurangi large igneous province, emplaced in the South Pacific at c. 120 Ma, is by far the largest LIP in Earth's history. The Ontong Java Plateau today covers an area of 1,860,000 km2. In the Indian Ocean another LIP began to form at c. 120 Ma, the Kerguelen P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Cretaceous Dinosaurs Of Asia
{{disambiguation, geo ...
Early may refer to: History * The beginning or oldest part of a defined historical period, as opposed to middle or late periods, e.g.: ** Early Christianity ** Early modern Europe Places in the United States * Early, Iowa * Early, Texas * Early Branch, a stream in Missouri * Early County, Georgia Other uses * ''Early'' (Scritti Politti album), 2005 * ''Early'' (A Certain Ratio album), 2002 * Early (name) * Early effect, an effect in transistor physics * Early Records, a record label * the early part of the morning See also * Earley (other) Earley is a town in England. Earley may also refer to: * Earley (surname), a list of people with the surname Earley * Earley (given name), a variant of the given name Earlene * Earley Lake, a lake in Minnesota *Earley parser, an algorithm *Earley ... [...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] |
Cenomanian
The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the stratigraphic column deposited during the corresponding age. Both age and stage bear the same name. As a unit of geologic time measure, the Cenomanian Age spans the time between 100.5 and 93.9 million years ago (Mya). In the geologic timescale, it is preceded by the Albian and is followed by the Turonian. The Upper Cenomanian starts around at 95 Mya. The Cenomanian is coeval with the Woodbinian of the regional timescale of the Gulf of Mexico and the early part of the Eaglefordian of the regional timescale of the East Coast of the United States. At the end of the Cenomanian, an anoxic event took place, called the Cenomanian-Turonian boundary event or the "Bonarelli event", that is associated with a minor extinction event for marine spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huanghetitan
''Huanghetitan'' (meaning "Yellow River titan"), is a genus of sauropod dinosaur from the early Cretaceous Period. It was a basal titanosauriform which lived in what is now Gansu, China. History The type species, ''Huanghetitan liujiaxiaensis'', was described by You ''et al.'' in 2006. It is known from fragmentary materials including two caudal vertebrae, an almost complete sacrum, rib fragments, and the left shoulder girdle, and was discovered in the eastern part of the Lanzhou Basin (Hekou Group) in the Gansu Province in 2004. A second species, ''H. ruyangensis'', was described in 2007 from the Aptian-Albian Haoling Formation of Ruyang County, China (Henan Province). A recent cladistic analysis has found that this species is unlikely to be closely related to ''H. liujiaxiaensis'' and requires a new genus name. Description ''H. liujiaxiaensis'' is a relatively small sauropod, measuring long and weighing . ''H. ruyangensis'' is known from a partial vertebral column and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yunmenglong
''Yunmenglong'' (meaning "Yunmeng dragon", after the Yunmengshan area where it was found) is an extinct genus of somphospondylan sauropod known from the late Early Cretaceous of Henan Province, central China. Its remains were discovered in the Haoling Formation of the Ruyang Basin. The type species is ''Yunmenglong ruyangensis'', described in 2013 by Junchang Lü ''et al.'' on the basis of an incomplete postcranial skeleton. ''Yunmenglong'' shares some characters with ''Euhelopus'', ''Qiaowanlong'' and ''Erketu'', and a phylogenetic analysis places it as a sister taxon of ''Qiaowanlong'', both grouped with ''Erketu'' in a position more derived than ''Euhelopus'' but basal to Titanosauria. Size ''Yunmenglong'' was a giant sauropod dinosaur, as evidenced by the complete right femur 192 cm long and 65 cm in distal width, which is comparable to other giant Chinese genus ''Fusuisaurus''. In 2016 Paul Paul may refer to: *Paul (given name), a given name (includes a list of peo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
