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Hadrosauroid
Hadrosauroidea is a clade or superfamily of ornithischian dinosaurs that includes the "duck-billed" dinosaurs, or Hadrosauridae, and all dinosaurs more closely related to them than to ''Iguanodon''. Their remains have been recovered in Asia, Europe, Africa and the Americas. Many primitive hadrosauroids, such as the Asian '' Probactrosaurus'' and ''Altirhinus'', have traditionally been included in a paraphyletic (unnatural grouping) "Iguanodontidae". With cladistic analysis, the traditional Iguanodontidae has been largely disbanded, and probably includes only ''Iguanodon'' and perhaps its closest relatives. Classification Hadrosauroidea was given a formal phylogenetic definition in the ''PhyloCode'' by Daniel Madzia and colleagues in 2021 as "the largest clade containing ''Hadrosaurus foulkii'', but not ''Iguanodon bernissartensis''". The cladogram below follows an analysis by Andrew McDonald, 2012, and shows the position of Hadrosauroidea within Styracosterna: The cladogram bel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qianjiangsaurus
''Qianjiangsaurus'' (meaning " Qianjiang lizard") is an extinct genus of hadrosauroidean ornithopod dinosaurs from the Late Cretaceous Zhengyang Formation of China. The genus contains a single species, ''Q. changshengi'', known from a partial skeleton. ''Qianjiangsaurus'' is one of the few hadrosauroids named from south China, and it indicates important fauna connections between similarly aged formations in Mongolia. Discovery and naming The ''Qianjiangsaurus'' holotype specimen, CLGRP V00016, was discovered by a paleontological expedition associated with the Chongqing Bureau of Geological and Mineral Resource Exploration and Development during the winter of 2022. The locality represents sediments of the Zhengyang Formation near Zhengyang area in Qianjiang District, Chongqing Municipality of southwest China. The specimen consists of a partial, somewhat articulated skeleton, comprising an incomplete mandible, four dorsal vertebrae, the sacrum, many caudal vertebrae and associa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gongpoquansaurus
''Gongpoquansaurus'' (meaning "Gongpoquan reptile") is an extinct genus of basal hadrosauroid dinosaur that was not formally named until 2014, while the name was a ''nomen nudum'' for many years previously. It is known from IVPP V.11333, a partial skull and postcranial skeleton. It was collected in 1992 at locality IVPP 9208–21, from the Albian Zhonggou Formation (Xinminpu Group), in Mazongshan, Gansu Province, China. The specimen was first described and named by Lü Junchang in 1997 as the third species of ''Probactrosaurus'', ''Probactrosaurus mazongshanensis''. Following its description, several studies found it to be less derived than the type species of ''Probactrosaurus'' in relation to Hadrosauridae. In 2014, the species was formally redescribed, and the describers erected ''Gongpoquansaurus''. History of discovery Expeditions into the Gansu Province of northwestern China began with the Sino-Swedish Expedition of 1930 to 1931, where discoveries of dinosaurs including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadrosauromorpha
Hadrosauromorpha is a clade of iguanodontian ornithopods, defined in 2014 by David B. Norman to divide Hadrosauroidea into the basal taxa with compressed manual bones and a pollex, and the derived taxa that lack them. The clade is formally defined in the ''PhyloCode'' as "the largest clade containing ''Hadrosaurus foulkii'', but not '' Probactrosaurus gobiensis''". This results in different taxon inclusion depending on the analysis. Classification Hadrosauromorpha was first used in literature by David B. Norman in 2014 in a discussion of phylogenetics of ''Hypselospinus''. In his 2014 paper Norman references another of his publications as the authority for Hadrosauromorpha, a chapter in the book ''Hadrosaurs''. However, the book was in fact published later, in 2015. Following Article 19.4 of the PhyloCode, the authorship of the clade is thus Norman (2015), while the authorship of the definition is Norman (2014). Definition Hadrosauromorpha was first given a phylogenetic defi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zuoyunlong
''Zuoyunlong'' (meaning " Zuoyun County dragon") is an extinct genus of herbivorous ornithischian dinosaur belonging to the Hadrosauroidea, that lived during the Late Cretaceous in the area of present China. Discovery and naming The holotype, SXMG V 00 004, was discovered before 2015 by the team of the Shanxi Regional Geological Survey in a layer of the Zhumapu Formation in the province of Shanxi which dates from the Cenomanian, roughly ninety-five million years old. It consists of two bones from the right-hand half of the pelvis, a partial right ilium with the field number ZY004-001 to which the cover sheet is missing, and the lower end of the shaft of the right ischium, field number ZY004-002. Additional specimens are unassigned. In 2017 the type species ''Zuoyunlong huangi'' was named and described by Wang Runfu, You Hailu, Wang Suozhu, Shichao Xu, Yi Jian, Xie Lijuan, Lei Jia, and Xing Hai. The generic name refers to the prefecture of Zuoyun with the Chinese word ''long'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Probactrosaurus
''Probactrosaurus'' (meaning "before ''Bactrosaurus''") is an early herbivorous hadrosauroid iguanodont dinosaur. It lived in China during the Early Cretaceous Period (geology), period. Discovery and species In 1959 and 1960 a Soviet-Chinese expedition uncovered the remains of a euornithopoda, euornithopod in Inner Mongolia near Maortu. The type species is ''Probactrosaurus gobiensis'', described and named by Anatoly Konstantinovich Rozhdestvensky, A. K. Rozhdestvensky in 1966 in paleontology, 1966. The generic name refers to Rozhdestvensky's hypothesis that ''Probactrosaurus'' would be the direct ancestor of ''Bactrosaurus'', a notion now discarded. The specific name (zoology), specific name refers to the Gobi Desert. The holotype specimen, PIN 2232/1, a partial skeleton with skull, was found in layers of the Miaogou Formation (Maortu locality; originally interpreted as the nearby Dashuigou Formation). Another partial skeleton, PIN 2232-10, was found along with numerous other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sirindhorna
''Sirindhorna'' is a genus of hadrosauroid ornithopod dinosaur from Early Cretaceous deposits of northeastern Thailand. Discovery and naming In 2007, the Fukui Prefectural Dinosaur Museum (FPDM) approached the Northeastern Research Institute of Petrified Woods and Mineral Resources, Nakhon Ratchasima Rajabhat University (NRRU) and associated Khorat Fossil Museum on the possibility of a collaboration. The motivation for such an effort was because of the similar age of rocks in Suranaree Subdistrict, Nakhon Ratchasima Province, Thailand and Katsuayama, Fukui Prefecture, Japan. Similar dinosaurs are known from the formations of both locales, and so the researchers wanted to collaborate in research to be able to more deeply compare the prehistory of both countries. The collaboration was approved as the Japan-Thailand Dinosaur Project (JTDP), and this contributed to the basis of the founding of the Asia Dinosaur Association in 2013, by which time over 30,000 fossils had been fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batyrosaurus
''Batyrosaurus'' is an extinct genus of herbivorous basal hadrosauroid dinosaur known from the Late Cretaceous Bostobe Formation (Santonian to Campanian stage) of central Kazakhstan. It contains a single species, ''Batyrosaurus rozhdestvenskyi''. It is possible that ''Batyrosaurus'' represents the same taxon as the doubtful '' Arstanosaurus akkurganensis'' as both were found from the same formation. The type species ''Batyrosaurus rozhdestvenskyi'' was in 2012 named and described by Pascal Godefroit, François Escuillié, Yuri Bolotsky and Pascaline Lauters. The generic name is derived from the ''Batyr'', the Kazakh hero warriors. The specific name honours Anatoly Konstantinovich Rozhdestvensky. The holotype, AEHM 4/1, was found near Akkurgan in a layer of the Bostobinskaya Formation dating from the Santonian-Campanian, about eighty-four millions year old. It consists of a partial skeleton, including a partial skull, the lower jaws, sixty individual teeth, the sterna, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Datonglong
''Datonglong tianzhenensis'' is an herbivorous ornithischian dinosaur belonging to the Hadrosauroidea, which lived in the Late Cretaceous period in present-day China. It is the type species of the genus ''Datonglong''. Discovery and naming In 2008, a team from the Shanxi Museum of Geological and Mineral Science and Technology in the Kangdailiang quarry in Shanxi discovered the jaw of a Euornithopoda, euornithopod. In 2016, the species ''Datonglong tianzhenensis'' was named and described by Xu Shicha, You Hailu, Wang Jiawei, Wang Suozhu, Yi Jian, and Jia Lei. The generic name refers to the city of Datong and the Chinese word ''long'' (龍), which means “dragon”. The specific name refers to its origins in Tianzhen, Tianzhen county. ''Datonglong'' was one of eighteen dinosaur taxa from 2015 to be described in open access or free-to-read journals. Description The holotype, SXMG V 00005, consists of a portion of the lower jaw with some preserved teeth. The fossil was found in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portellsaurus
''Portellsaurus'' (meaning "Portell Lizard") is a genus of hadrosauroid dinosaur from the Lower Cretaceous Margas de Mirambell Formation of Spain. The genus contains a single species, ''Portellsaurus sosbaynati'', known from a partial right dentary. Discovery and naming ''Portellsaurus'' was discovered in 1998 by Miquel Guardiola, Julián Yuste and Silvia Fabregat in a site near Mas de Curolles. The generic name, ''Portellsaurus'', comes from the Portell de Morella, the town where the holotype was recovered, and the specific name, ''sosbaynati'', refers to Vicente Sos Baynat, a Spanish geologist who was the first scientist honored by Universitat Jaume I as "Doctor Honoris Causa". Description ''Portellsaurus'' is known from an almost complete right dentary, MQ98-II-1, which is stored at the Colección Museográfica de Cinctorres in Castellón. ''Portellsaurus'' can be distinguished from other styracosternans through the possession of two unique features: the absence of a bul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ouranosaurus
''Ouranosaurus'' is a genus of herbivorous basal hadrosauriform dinosaur that lived during the Aptian stage of the Early Cretaceous of modern-day Niger and Cameroon. ''Ouranosaurus'' measured about long and weighed . Two rather complete fossils were found in the Elrhaz Formation, Gadoufaoua deposits, Agadez, Niger, in 1965 and 1970, with a third indeterminate specimen known from the Koum Formation of Cameroon. The animal was named in 1976 by French paleontologist Philippe Taquet, the type species being ''Ouranosaurus nigeriensis''. The Generic name (biology), generic name is a combination of ''ourane'', a word with multiple meanings, and ''sauros'', the Greek word for lizard. The specific epithet ''nigeriensis'' alludes to ''Niger'', its country of discovery (in Latin, the adjectival suffix ''-iensis'' means "originating from"). And so, ''Ouranosaurus nigeriensis'' could be interpreted as "brave lizard originating from Niger". Discovery and naming Five French palaeontological ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Koshisaurus
''Koshisaurus'' is a monospecific genus of basal hadrosauroid from the Kitadani Formation in Japan. The discovery of the genus suggests that hadrosauroids had higher diversity along the eastern margin of Asia in the Early Cretaceous. "Koshi" means an old Japanese regional name including Fukui prefecture where fossils of the genus were discovered. Description ''Koshisaurus'' was unlike most hadrosauroids due to the fact that it possessed an antorbital fossa, as well as three subsidiary ridges on its maxillary teeth, similar to those of ''Equijubus''. These ridges are also present on the also Asian genera '' Xuwulong'', ''Jinzhousaurus'' and ''Altirhinus''; but all three lack antorbital fossae, placing them as more advanced than ''Koshisaurus''., See also * Timeline of hadrosaur research This timeline of hadrosaur research is a chronological listing of events in the History of paleontology, history of paleontology focused on the hadrosauroids, a group of herbivorous orni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jinzhousaurus
''Jinzhousaurus'' is a genus of hadrosauroid dinosaur of the Early Cretaceous of China. The type species is ''Jinzhousaurus yangi''. The generic name refers to the town Jinzhou. The specific name honours Yang Zhongjian is the founder of Chinese paleontology. It was first described by Wang Xiao-lin and Xu Xing in 2001. Discovery Its fossil, holotype IVPP V12691, was found near Baicaigou in Yixian County in the Dawangzhangzi Beds of the Yixian Formation in Liaoning, China, having an oldest determinable age of 122 million years, during the early Aptian stage of the early Cretaceous Period.Zhou, Z. (2006). "Evolutionary radiation of the Jehol Biota: chronological and ecological perspectives." ''Geological Journal'', 41: 377-393. It consists of a nearly complete skeleton, compressed on a slab. Description ''Jinzhousaurus'' has a length of about 7 metres (23 ft) and its skull is about half a metre long. Its snout was elongated with large nares and lacking an antorbital fen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
