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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 The family Mamenchisauridae was first erected by Chinese paleontologists Yang Zhongjian ("C.C. Young") and Zhao Xijin in 1972, in a paper describing '' Mamenchisaurus hochuanensis''.Young, C.C. and Zhao, X. (1972). "''Mamenchisaurus hochuanensis sp. nov.''". ''Institute of Vertebrate Palaeontology and Palaeoanthropology Monographs'' Series A 8: 1-30. The most complete cladogram of Mamenchisauridae is presented by Moore ''et al.'', 2020, which includes several named species. Notably, some iterations of their analysis recover ''Euhelopus'' and kin, usually considered somphospondylians, as relatives of mamenchisaurids, mirroring earlier conceptions about the family. Topology A: Implied-weights analysis, Gonzàlez Riga dataset Topology B: Ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xinjiangtitan
''Xinjiangtitan'' ( zh, s=新疆巨龙, p=Xīnjiāngjùlóng) is an extinct genus of mamenchisaurid sauropod that lived during the Middle Jurassic of what is now Xinjiang, northwestern China. Its type and only species is ''Xinjiangtitan shanshanesis'' ( zh, s=鄯善新疆巨龙, p=Shànshàn Xīnjiāngjùlóng), known from a single incomplete skeleton recovered from the Qiketai Formation. The holotype preserves one of the most complete vertebral columns of any sauropod found in Asia, and has the longest complete neck known for any animal. Discovery The type specimen of ''Xinjiangtitan shanshanesis'' was discovered by a joint expedition of Jilin University, Shenyang Normal University, and Xinjiang Geological Survey Institutute in 2012, from a quarry south of Qiketai, Xinjiang. In 2013, before the specimen had been fully excavated, Wu Wen-hao, Zhou Chang-fu, Oliver Wings, Toru Sekiha and Dong Zhiming described it as a new genus and species, ''Xinjiangtitan shanshanesis''. The gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhomaleopakhus
''Rhomaleopakhus'' (meaning "strong forearm") is a genus of mamenchisaurid sauropod, dinosaur from the Late Jurassic Kalaza Formation of China. The type and only species is ''Rhomaleopakhus turpanensis''. History The holotype IVPP-V11121-1, was found by a Chinese-Japanese ''Chunichi Shinibun'' expedition near Qiketai in Shanshan, Xinjiang province in 1993, along with the holotype of ''Hudiesaurus'',Dong, Z. (1997). "A gigantic sauropod (''Hudiesaurus sinojapanorum'' gen. et sp. nov.) from the Turpan Basin, China." Pp. 102-110 in Dong, Z. (ed.), ''Sino-Japanese Silk Road Dinosaur Expedition''. China Ocean Press, Beijing. and is a partially complete forelimb consisting of a humerus, ulna, radius, one carpal, and a partially complete manus that was originally assigned to the coeval mamenchisaurid ''Hudiesaurus''. Paul Upchurch in 2004 rejected the identity because of a lack of overlapping material.Upchurch, P.; Barrett, P.M.; Dodson, P.; 2004 "Sauropoda". In: Weishampel, D.B. and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tienshanosaurus Chitaiensis
''Tienshanosaurus'' (meaning "Tienshan lizard") is an extinct genus of dinosaur from the Late Jurassic. It was a sauropod which lived in what is now China. Only one species is known, ''Tienshanosaurus chitaiensis'', which was named and described in 1937. Discovery and classification On 11 September 1928 Chinese geology professor Yuan Fu ("P.L. Yüan") discovered in Xinjiang the remains of about thirty adult and three juvenile sauropods, which he uncovered during the following weeks. The finds, including a fossilized egg, were sent to Beijing where they ultimately became part of the collection of the Institute of Vertebrate Paleontology and Paleoanthropology. In 1937 paleontologist Yang Zhongjian ("C.C. Young") named the type species ''Tienshanosaurus chitaiensis''.C.-C. Young, 1937, "A new dinosaurian from Sinkiang", ''Palaeontologia Sinica'', New Series C, Whole Series No. 132 213: 1-29 The generic name, suggested by Yuan, refers to the Tian Shan, the "heavenly mountains". The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omeisaurus Junghsiensis
''Omeisaurus'' (meaning "Omei lizard") is a genus of sauropod dinosaur from the Middle Jurassic Period (geology), Period (Bathonian-Callovian stage) of what is now China. Its name comes from Mount Emei, where it was discovered in the lower Shaximiao Formation of Sichuan Province. Like most sauropods, ''Omeisaurus'' was herbivorous and large. The largest species, ''O. tianfuensis'', measured long, and weighed . Other species were much smaller, as the type species ''O. junghsiensis'' reached a size of in length and in body mass, and ''O. maoianus'' reached a size of and . Discovery and species Initial discovery and ''O. changshouensis'' The initial discovery of ''Omeisaurus'' was in 1936 when Charles Lewis Camp and Yang Zhongjian collected a partial skeleton from strata of the Shaximiao Formation in Sichuan, Szechuan, China.Young, C. C. (1939)On a new Sauropoda, with notes on other fragmentary reptiles from Szechuan ''Bulletin of the Geological Society of China'', ''19''(3) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wamweracaudia Keranjei
''Wamweracaudia'' is a large herbivorous sauropod dinosaur from the Late Jurassic Tendaguru Formation of Tanzania, Africa, 155-145 million years ago. Discovery and naming During the German expeditions to the Tendaguru in German East Africa between 1909 and 1912, paleontologist Werner Janensch supervised the excavation of a sauropod tail at "Site G". In 1929, he referred this tail to ''Gigantosaurus robustus''.Janensch, W. 1929. "Material und Formengehalt in der Ausbeute der Tendaguru-Expedition", ''Palaeontographica'', Supplement 7, 1. Reihe, Teil 2: 1-34 In 1991, ''G. robustus'' was made the separate genus ''Janenschia''.Wild, R. 1991. "''Janenschia'' n. g. ''robusta'' (E. Fraas 1908) pro ''Tornieria robusta'' (E. Fraas 1908) (Reptilia, Saurischia, Sauropodomorpha). ''Stuttgarter Beiträge zur Naturkunde, Serie B (Geologie und Paläontologie)'' 173: 1–4 Janensch had referred the tail based on personal observation of a series of finds of comparable material. During the Second W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zigongosaurus
''Zigongosaurus'' (meaning "Zigong lizard") is a genus of sauropod dinosaur from the Middle Jurassic- Late Jurassic-age Shaximiao Formation of Zigong, Sichuan, China. Because of incomplete knowledge of Jurassic Chinese sauropods, it has been hard to interpret, with some sources assigning it to '' Omeisaurus'', some to '' Mamenchisaurus'', and some to its own genus. History and taxonomy The genus was based on CV 00261, a specimen including a partial mandible, maxilla, and basioccipital (a bone from the braincase region). Additional bones from all areas of the skeleton, belonging to multiple individuals, were also described and assigned to the new genus. The authors thought it resembled ''Omeisaurus'', but was distinct based on vertebral details. Early accounts in the popular press suggested it was a brachiosaurid. Chinese sauropod taxonomy became increasingly convoluted in the 1980s. In 1983, Dong, Zhou, and Zhang named a species ''Omeisaurus fuxiensis'', which they based on d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yuanmousaurus
''Yuanmousaurus'' ("Yuanmou lizard") was a sauropod dinosaur from the Middle Jurassic period of China. It is known from incomplete remains, recovered in 2000 from the Zhanghe Formation in Yuanmou County in Yunnan Province. ''Yuanmousaurus'' was a relatively large sauropod and may have reached about 17 meters (56 ft) in length. It was a basal member of the Sauropoda, but its exact systematic position is unclear. A recent study placed ''Yuanmousaurus'' within the family Mamenchisauridae. The only and type species was ''Yuanmousaurus jiangyiensis''. Description ''Yuanmousaurus'' was estimated to be approximately 17 meters (56 ft) in length. The skull is missing, while the neck is known only from a fragment of a posterior cervical vertebra. This fragment indicates elongated neck vertebrae, similar to those of mamenchisaurid sauropods, but unlike the much shorter neck vertebrae of the more basal ''Shunosaurus''. From the trunk and tail, nine dorsal, three sacral a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mamenchisaurus
''Mamenchisaurus'' (or spelling pronunciation ) is a genus of sauropod dinosaur known for their remarkably long necks which made up nearly half the total body length. Numerous species have been assigned to the genus; however, many of these might be questionable. Fossils have been found in the Sichuan Basin and Yunnan Province in China. Several species are from the Upper Shaximiao Formation whose geologic age is uncertain. However, evidence suggests that this be no earlier than the Oxfordian stage of the Late Jurassic. ''M. sinocanadorum'' dates to the Oxfordian stage (158.7 to 161.2 mya) and ''M. anyuensis'' to the Aptian stage of the Early Cretaceous around 114.4 mya. Most species were medium- to large-size sauropods in length.Russell, D.A., Zheng, Z. (1993). "A large mamenchisaurid from the Junggar Basin, Xinjiang, People Republic of China." ''Canadian Journal of Earth Sciences'', (30): 2082-2095. Two as-yet-undescribed cervical vertebrae, which might belong to ''M. sinocanado ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wamweracaudia
''Wamweracaudia'' is a large herbivorous sauropod dinosaur from the Late Jurassic Tendaguru Formation of Tanzania, Africa, 155-145 million years ago. Discovery and naming During the German expeditions to the Tendaguru in German East Africa between 1909 and 1912, paleontologist Werner Janensch supervised the excavation of a sauropod tail at "Site G". In 1929, he referred this tail to ''Gigantosaurus robustus''.Janensch, W. 1929. "Material und Formengehalt in der Ausbeute der Tendaguru-Expedition", ''Palaeontographica'', Supplement 7, 1. Reihe, Teil 2: 1-34 In 1991, ''G. robustus'' was made the separate genus ''Janenschia''.Wild, R. 1991. "''Janenschia'' n. g. ''robusta'' (E. Fraas 1908) pro ''Tornieria robusta'' (E. Fraas 1908) (Reptilia, Saurischia, Sauropodomorpha). ''Stuttgarter Beiträge zur Naturkunde, Serie B (Geologie und Paläontologie)'' 173: 1–4 Janensch had referred the tail based on personal observation of a series of finds of comparable material. During the Second W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonganosaurus
''Tonganosaurus'' (named for the town of Tong'an, Sichuan where it was found) is a genus of mamenchisaurid sauropod dinosaur, similar to ''Omeisaurus''. It is known from one specimen consisting of twenty vertebrae, a front limb and pectoral girdle, and a complete hind limb with partial hip. It was discovered in the Yimen Formation, China. The horizon of the specimen and the age of the Yimen Formation is controversial. The formation has been divided into three levels, and ''Tonganosaurus'' appears to be of late Early Jurassic (Pliensbachian) age. ''Tonganosaurus'' is the oldest known member of the mamenchisaurids, being almost 15 million years older than the next-oldest members of the group. It was first named by Li Kui, Yang Chun-Yan, Liu Jian and Wang Zheng-Xin in 2010 and the type species is ''Tonganosaurus hei''. Description The ratio of the front and rear limbs is 0.80. The tibia was straight and thick, with a length 75% that of the femur. The holotype is an incomplete ske ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tienshanosaurus
''Tienshanosaurus'' (meaning "Tienshan lizard") is an extinct genus of dinosaur from the Late Jurassic. It was a sauropod which lived in what is now China. Only one species is known, ''Tienshanosaurus chitaiensis'', which was named and described in 1937. Discovery and classification On 11 September 1928 Chinese geology professor Yuan Fu ("P.L. Yüan") discovered in Xinjiang the remains of about thirty adult and three juvenile sauropods, which he uncovered during the following weeks. The finds, including a fossilized egg, were sent to Beijing where they ultimately became part of the collection of the Institute of Vertebrate Paleontology and Paleoanthropology. In 1937 paleontologist Yang Zhongjian ("C.C. Young") named the type species ''Tienshanosaurus chitaiensis''.C.-C. Young, 1937, "A new dinosaurian from Sinkiang", ''Palaeontologia Sinica'', New Series C, Whole Series No. 132 213: 1-29 The generic name, suggested by Yuan, refers to the Tian Shan, the "heavenly mountains". The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qijianglong
''Qijianglong'' is a genus of herbivorous mamenchisaurid sauropod dinosaur from the Early Cretaceous of China.Wang, J.; Norell, M. A.; Pei, R.; Ye, Y.; Chang, S.-C (2019). Surprisingly young age for the mamenchisaurid sauropods in South China. ''Cretaceous Research'' doi:10.1016/j.cretres.2019.07.006. Discovery A vertebra of ''Qijianglong'' was first discovered in the early 1990s by farmer Cai Changming of Heba village, Sichuan, in his backyard. Work at a nearby construction site at Qijiang District uncovered a rich fossil quarry in 2006. Its excavation caused an examination of the earlier find which led to the discovery of a skeleton. In 2015, the type species ''Qijianglong guokr'' was named and described by Xing Lida ( China University of Geosciences), Tetsuto Miyashita (University of Alberta), Zhang Jianping, Li Daqing, Ye Yong (Zigong Dinosaur Museum), Toru Sekiya (Fukui Prefectural Dinosaur Museum), Wang Fengping and Philip John Currie. The generic name combines the dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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