Re-assessment of the Late Jurassic eusauropod dinosaur Hudiesaurus sinojapanorum Dong, 1997, from the Turpan Basin, China, and the evolution of hyper-robust antebrachia in sauropods

doi:10.1080/02724634.2021.1994414

IVPP-IR > 中科院古脊椎所（2000年以后）

	Re-assessment of the Late Jurassic eusauropod dinosaur Hudiesaurus sinojapanorum Dong, 1997, from the Turpan Basin, China, and the evolution of hyper-robust antebrachia in sauropods
	Upchurch, Paul 1; Mannion, Philip D.1; Xu, Xing2,3 ; Barrett, Paul M.1,4
	2021-07-04
发表期刊	JOURNAL OF VERTEBRATE PALEONTOLOGY
ISSN	0272-4634
页码	31
通讯作者	Upchurch, Paul(p.upchurch@ucl.ac.uk)
摘要	Hudiesaurus sinojapanorum is a Late Jurassic sauropod from northwestern China that was erected on the basis of a cervicodorsal vertebra, four teeth, and a nearly complete forelimb. However, re-evaluation of this material, and comparisons with other taxa, indicate that there are few grounds for regarding these specimens as congeneric. Consequently, although we retain the vertebra as the holotype specimen of Hudiesaurus, the forelimb is assigned to a new taxon-Rhomaleopakhus turpanensis, gen. et sp. nov. The teeth previously referred to Hudiesaurus are poorly preserved but resemble those of several other 'core Mamenchisaurus-like taxa' (CMTs) from East Asia, such as Mamenchisaurus sinocanadorum. Phylogenetic analyses confirm that Hudiesaurus is a CMT and the sister taxon of Xinjiangtitan. Despite some uniquely shared features, their large size, and close geographic provenance, Hudiesaurus and Xinjiangtitan are retained as distinct genera based on their stratigraphic separation and numerous anatomical differences. Rhomaleopakhus is also shown to be a CMT in all analyses, being most closely related to Chuanjiesaurus and Analong. We link the convergent evolution of robust antebrachia and an enlarged olecranon in CMTs, titanosaurs, and some ornithischians (e.g., ceratopsids) to a more flexed orientation of the forearm, an enhanced role for the forelimb in locomotion, and an anterior shift in the whole-body center of mass. CMTs and titanosaurs potentially converged on a feeding strategy in which the ability to increase browse height via bipedal rearing was sacrificed in return for more efficient locomotion that improved travel between patchily distributed food sources.
DOI	10.1080/02724634.2021.1994414
关键词[WOS]	PHYLOGENETIC-RELATIONSHIPS ; JUNGGAR BASIN ; SALTASAURINE TITANOSAUR ; CRETACEOUS STRATA ; ANATOMY ; SAURISCHIA ; MORPHOLOGY ; PATAGONIA ; XINJIANG ; PROVINCE
收录类别	SCI
语种	英语
资助项目	Royal Society ; Leverhulme Trust[RPG-129] ; National Geographic Waitt grant[W421-16] ; Royal Society University Research Fellowship[UF160216] ; Jurassic Foundation ; Departmental Investment Funds of the Natural History Museum, London ; National Natural Science Foundation of China[41688103]
项目资助者	Royal Society ; Leverhulme Trust ; National Geographic Waitt grant ; Royal Society University Research Fellowship ; Jurassic Foundation ; Departmental Investment Funds of the Natural History Museum, London ; National Natural Science Foundation of China
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000729689000001
出版者	TAYLOR & FRANCIS INC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/19116
专题	中科院古脊椎所（2000年以后）
通讯作者	Upchurch, Paul
作者单位	1.UCL, Dept Earth Sci, Gower St, London WC1E 6BT, England 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 3.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 4.Nat Hist Museum, Dept Earth Sci, Cromwell Rd, London SW7 5BD, England
推荐引用方式 GB/T 7714	Upchurch, Paul,Mannion, Philip D.,Xu, Xing,et al. Re-assessment of the Late Jurassic eusauropod dinosaur Hudiesaurus sinojapanorum Dong, 1997, from the Turpan Basin, China, and the evolution of hyper-robust antebrachia in sauropods[J]. JOURNAL OF VERTEBRATE PALEONTOLOGY,2021:31.
APA	Upchurch, Paul,Mannion, Philip D.,Xu, Xing,&Barrett, Paul M..(2021).Re-assessment of the Late Jurassic eusauropod dinosaur Hudiesaurus sinojapanorum Dong, 1997, from the Turpan Basin, China, and the evolution of hyper-robust antebrachia in sauropods.JOURNAL OF VERTEBRATE PALEONTOLOGY,31.
MLA	Upchurch, Paul,et al."Re-assessment of the Late Jurassic eusauropod dinosaur Hudiesaurus sinojapanorum Dong, 1997, from the Turpan Basin, China, and the evolution of hyper-robust antebrachia in sauropods".JOURNAL OF VERTEBRATE PALEONTOLOGY (2021):31.

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