气候变化领域集成服务门户(CCPortal): Integrated hearing and chewing modules decoupled in a Cretaceous stem therian mammal

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DOI	10.1126/science.aay9220
	Integrated hearing and chewing modules decoupled in a Cretaceous stem therian mammal
	Mao F.; Hu Y.; Li C.; Wang Y.; Chase M.H.; Smith A.K.; Meng J.
发表日期	2020
ISSN	0036-8075
起始页码	305
结束页码	308
卷号	367 期号:6475
英文摘要	On the basis of multiple skeletal specimens from Liaoning, China, we report a new genus and species of Cretaceous stem therian mammal that displays decoupling of hearing and chewing apparatuses and functions. The auditory bones, including the surangular, have no bone contact with the ossified Meckel’s cartilage; the latter is loosely lodged on the medial rear of the dentary. This configuration probably represents the initial morphological stage of the definitive mammalian middle ear. Evidence shows that hearing and chewing apparatuses have evolved in a modular fashion. Starting as an integrated complex in non-mammaliaform cynodonts, the two modules, regulated by similar developmental and genetic mechanisms, eventually decoupled during the evolution of mammals, allowing further improvement for more efficient hearing and mastication. © 2020 American Association for the Advancement of Science. All rights reserved.
关键词	Cretaceous evolution hearing mammal new genus article bone cartilage China Cretaceous hearing mastication middle ear new genus nonhuman therian anatomy and histology animal evolution fossil jaw mammal physiology tooth China Liaoning Mammalia Theria Animals Biological Evolution Bone and Bones China Ear, Middle Fossils Hearing Jaw Mammals Mastication Tooth
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133774
推荐引用方式 GB/T 7714	Mao F.,Hu Y.,Li C.,et al. Integrated hearing and chewing modules decoupled in a Cretaceous stem therian mammal[J]. Science,2020,367(6475).
APA	Mao F..,Hu Y..,Li C..,Wang Y..,Chase M.H..,...&Meng J..(2020).Integrated hearing and chewing modules decoupled in a Cretaceous stem therian mammal.,367(6475).
MLA	Mao F.,et al."Integrated hearing and chewing modules decoupled in a Cretaceous stem therian mammal".367.6475(2020).