The bony labyrinth of Platecarpus (Squamata: Mosasauria) and aquatic adaptations in squamate reptiles

doi:10.1016/j.palwor.2018.12.001

IVPP-IR > 中科院古脊椎所（2000年以后）

	The bony labyrinth of Platecarpus (Squamata: Mosasauria) and aquatic adaptations in squamate reptiles
	Yi, Hongyu 1,2,3; Norell, Mark 3
	2019-12-01
发表期刊	PALAEOWORLD
ISSN	1871-174X
卷号	28 期号:4 页码:550-561
通讯作者	Yi, Hongyu([email protected])
摘要	Mosasaurs were among the last marine reptiles that lived before the Cretacesous-Paleogene extinction. Little is known about the sensory evolution of mosasaurs in relation to their aquatic lifestyle. In this study, the braincase of Platecarpus was CT-scanned and virtual models were constructed showing the bony labyrinth - or the inner ear - a sensory apparatus for balance and hearing. The virtual inner ear consists of the semicircular canals, vestibule, and cochlea. Compared with extant squamates, Platecarpus resembles sea snakes in having a small vestibule with a flat dorsal surface, but it differs from non-mosasaurian squamates in having rounded semicircular canals. Phylogenetic linear regression analysis supports a linear relationship, independent from phylogeny, between the length of the three semicircular canals and the length of the skull. The semicircular canals of Platecarpus are shorter than predicted, but the fossil data fell within the 95% prediction interval calculated from the extant data and the skull length of Platecarpus. Although size reduction of the bony labyrinth has been associated with aquatic adaptions in mammals, our results suggest that in squamates, semicircular canal size is related to skull size rather than habitat preference. (C) 2018 Elsevier Ireland Ltd Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. Published by Elsevier B.V. All rights reserved.
关键词	Mosasaur Bony labyrinth X-ray computed tomography Aquatic adaptation Squamate Reptile
DOI	10.1016/j.palwor.2018.12.001
关键词[WOS]	PHYLOGENY
收录类别	SCI
语种	英语
资助项目	NSF[EF-0334961] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19050102] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB18030504] ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; National Natural Science Foundation of China[41702020] ; National Natural Science Foundation of China[41688103] ; Macaulay Family endowment ; Division of Paleontology at the American Museum of Natural History
项目资助者	NSF ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; National Natural Science Foundation of China ; Macaulay Family endowment ; Division of Paleontology at the American Museum of Natural History
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000499969100013
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/16767
专题	中科院古脊椎所（2000年以后）
通讯作者	Yi, Hongyu
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 3.Amer Museum Nat Hist, New York, NY 10024 USA
推荐引用方式 GB/T 7714	Yi, Hongyu,Norell, Mark. The bony labyrinth of Platecarpus (Squamata: Mosasauria) and aquatic adaptations in squamate reptiles[J]. PALAEOWORLD,2019,28(4):550-561.
APA	Yi, Hongyu,&Norell, Mark.(2019).The bony labyrinth of Platecarpus (Squamata: Mosasauria) and aquatic adaptations in squamate reptiles.PALAEOWORLD,28(4),550-561.
MLA	Yi, Hongyu,et al."The bony labyrinth of Platecarpus (Squamata: Mosasauria) and aquatic adaptations in squamate reptiles".PALAEOWORLD 28.4(2019):550-561.