干旱区生态环境知识资源中心(Arid): A new African Titanosaurian Sauropod Dinosaur from the middle Cretaceous Galula Formation (Mtuka Member), Rukwa Rift Basin, Southwestern Tanzania

Arid

DOI	10.1371/journal.pone.0211412
	A new African Titanosaurian Sauropod Dinosaur from the middle Cretaceous Galula Formation (Mtuka Member), Rukwa Rift Basin, Southwestern Tanzania
	Gorscak, Eric 1,2,3,4,5; O’Connor, Patrick M.4,5
通讯作者	Gorscak, Eric
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2019
卷号	14 期号:2
英文摘要	The African terrestrial fossil record has been limited in its contribution to our understanding of both regional and global Cretaceous paleobiogeography, an interval of significant geologic and macroevolutionary change. A common component in Cretaceous African faunas, titanosaurian sauropods diversified into one of the most specious groups of dinosaurs worldwide. Here we describe the new titanosaurian Mnyamawamtuka moyowamkia gen. et sp. nov. from the Mtuka Member of the Galula Formation in southwest Tanzania. The new specimen preserves teeth, elements from all regions of the postcranial axial skeleton, parts of both appendicular girdles, and portions of both limbs including a complete metatarsus. Unique traits of M. moyowamkia include the lack of an interpostzygapophyseal lamina in posterior dorsal vertebrae, pronounced posterolateral expansion of middle caudal centra, and an unusually small sternal plate. Phylogenetic analyses consistently place M. moyowamkia as either a close relative to lithostrotian titanosaurians (e.g., parsimony, uncalibrated Bayesian analyses) or as a lithostrotian and sister taxon to Malawisaurus dixeyi from the nearby Aptian? Dinosaur Beds of Malawi (e.g., tip-dating Bayesian analyses). M. moyowamkia shares a few features with M. dixeyi, including semi-spatulate teeth and a median lamina between the neural canal and interpostzygapophyseal lamina in anterior dorsal vertebrae. Both comparative morphology and phylogenetic analyses support Mnyamawamtuka as a distinct and distant relative to Rukwatitan bisepultus and Shingopana songwensis from the younger Namba Member of the Galula Formation with these results largely congruent with newly constrained ages for the Mtuka Member (Aptian-Cenomanian) and Namba Member (Campanian). Coupled with recent discoveries from the Dahkla Oasis, Egypt (e.g., Mansourasaurus shahinae) and other parts of continental Afro-Arabia, the Tanzania titanosaurians refine perspectives on the development of African terrestrial faunas throughout the Cretaceous a critical step in understanding non-marine paleobiogeographic patterns of Africa that have remained elusive until the past few years.
类型	Article
语种	英语
国家	USA
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000458761300044
WOS关键词	RAPETOSAURUS-KRAUSEI SAUROPODA ; RED SANDSTONE GROUP ; KEM KEM BEDS ; NEUQUENSAURUS-AUSTRALIS ; BASAL TITANOSAUR ; BAURU GROUP ; SP-NOV. ; PATAGONIA ; EVOLUTION ; OSTEOLOGY
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218085
作者单位	1.Midwestern Univ, Dept Anat, Downers Grove, IL 60515 USA; 2.Field Museum Nat Hist, Integrat Res Ctr, Chicago, IL 60605 USA; 3.Ohio Univ, Dept Biol Sci, Athens, OH 45701 USA; 4.Ohio Univ, Dept Biomed Sci, Heritage Coll Osteopath Med, Athens, OH 45701 USA; 5.Ohio Univ, Ohio Ctr Ecol & Evolutionary Studies, Athens, OH 45701 USA
推荐引用方式 GB/T 7714	Gorscak, Eric,O’Connor, Patrick M.. A new African Titanosaurian Sauropod Dinosaur from the middle Cretaceous Galula Formation (Mtuka Member), Rukwa Rift Basin, Southwestern Tanzania[J],2019,14(2).
APA	Gorscak, Eric,&O’Connor, Patrick M..(2019).A new African Titanosaurian Sauropod Dinosaur from the middle Cretaceous Galula Formation (Mtuka Member), Rukwa Rift Basin, Southwestern Tanzania.PLOS ONE,14(2).
MLA	Gorscak, Eric,et al."A new African Titanosaurian Sauropod Dinosaur from the middle Cretaceous Galula Formation (Mtuka Member), Rukwa Rift Basin, Southwestern Tanzania".PLOS ONE 14.2(2019).