A comparative study on auditory and hyoid bones of Jurassic euharamiyidans and contrasting evidence for mammalian middle ear evolution

doi:10.1111/joa.13083

	A comparative study on auditory and hyoid bones of Jurassic euharamiyidans and contrasting evidence for mammalian middle ear evolution
	Meng, Jin1,2 ; Mao, Fangyuan 1,3,4; Han, Gang 5,6; Zheng, Xiao-Ting 7,8; Wang, Xiao-Li 7,8; Wang, Yuanqing3,4
刊名	JOURNAL OF ANATOMY
	2019-09-09
期号	0 页码:22
关键词	auditory apparatus ectotympanic evolution hearing homology incus malleus stapes stylohyal surangular
ISSN号	0021-8782
DOI	10.1111/joa.13083
英文摘要	The holotypes of euharamiyidan Arboroharamiya allinhopsoni and Arboroharamiya jenkinsi preserve the auditory and hyoid bones, respectively. With additional structures revealed by micro-computerized tomography (CT) and X-ray micro-computed laminography (CL), we provide a detailed description of these minuscule bones. The stapes in the two species of Arboroharamiya are similar in having a strong process for insertion of the stapedius muscle. The incus is similar in having an almond-shaped body and a slim short process, in addition to a robust stapedial process with a short lenticular process preserved in A. allinhopsoni. The plate-like ectotympanic in the two species of Arboroharamiya is similar and comparable to that of Qishou jizantang. The surangular in the two species has a fan-shaped body and a needle-shaped anterior process. The malleus, ectotympanic, and surangular are fully detached from the dentary and should have functioned exclusively for hearing. All the auditory bones of Arboroharamiya display unique features unknown in other mammaliaforms. Moreover, hyoid elements are found in the two species of Arboroharamiya and co-exist with the five auditory bones in the holotype of A. allinhopsoni. The element interpreted as the stylohyal is similar to the bone identified as the ectotympanic in Vilevolodon. We reconstruct the auditory apparatus of Arboroharamiya and compare it with that of Vilevolodon as well as those in extant mammals and basal mammaliaforms. The comparison shows diverse morphological patterns of the auditory region in mammaliaforms. In particular, those of Vilevolodon and Arboroharamiya differ significantly: the former has a mandibular middle ear, whereas the latter possesses a definitive mammalian middle ear. It is puzzling that the two sympatric and dentally similar taxa have such different auditory apparatuses. In light of the available evidence, we argue that the mandibular middle ear reconstructed in Vilevolodon encounters many problems, and the so-called ectotympanic in Vilevolodon may be interpreted as a stylohyal; thus, the dilemma can be resolved.
资助项目	National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41404022] ; Strategic Priority Research Program (B) of the Chinese Academy of Science[XDB26000000] ; Kalbfleisch Fellowship, Richard Gilder Graduate School, American Museum of Natural History
WOS关键词	SOLENODON-PARADOXUS BRANDT ; OSSIFIED MECKELS CARTILAGE ; OSSEOUS INNER-EAR ; HISPANIOLAN SOLENODON ; YANLIAO BIOTA ; APPARATUS ; ORIGIN ; DIVERGENCE ; PHYLOGENY ; ECHOLOCATION
WOS研究方向	Anatomy & Morphology
语种	英语
出版者	WILEY
WOS记录号	WOS:000485525100001
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/10225]
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Meng, Jin; Mao, Fangyuan
作者单位	1.Amer Museum Nat Hist, Div Paleontol, Cent Pk West & 79th St, New York, NY 10024 USA 2.CUNY, Grad Ctr, Earth & Environm Sci, New York, NY 10021 USA 3.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 4.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 5.Bohai Univ, Paleontol Ctr, Jinzhou, Peoples R China 6.Hainan Trop Ocean Univ, Sanya, Peoples R China 7.Linyi Univ, Inst Geol & Paleontol, Linyi, Shandong, Peoples R China 8.Shandong Tianyu Museum Nat, Pingyi, Peoples R China
推荐引用方式 GB/T 7714	Meng, Jin,Mao, Fangyuan,Han, Gang,et al. A comparative study on auditory and hyoid bones of Jurassic euharamiyidans and contrasting evidence for mammalian middle ear evolution[J]. JOURNAL OF ANATOMY,2019(0):22.
APA	Meng, Jin,Mao, Fangyuan,Han, Gang,Zheng, Xiao-Ting,Wang, Xiao-Li,&Wang, Yuanqing.(2019).A comparative study on auditory and hyoid bones of Jurassic euharamiyidans and contrasting evidence for mammalian middle ear evolution.JOURNAL OF ANATOMY(0),22.
MLA	Meng, Jin,et al."A comparative study on auditory and hyoid bones of Jurassic euharamiyidans and contrasting evidence for mammalian middle ear evolution".JOURNAL OF ANATOMY .0(2019):22.