Mandibular characteristics of early Glires (Mammalia) reveal mixed rodent and lagomorph morphotypes

doi:10.1098/rstb.2022.0087

IVPP-IR

	Mandibular characteristics of early Glires (Mammalia) reveal mixed rodent and lagomorph morphotypes
	Fostowicz-Frelik, Lucja 1,2; Cox, Philip G.3; Li, Qian4,5
	2023-07-03
发表期刊	PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
ISSN	0962-8436
卷号	378 期号:1880 页码:9
摘要	Glires (rodents, lagomorphs and their fossil kin) is the most speciose and arguably most diversified clade of living placentals. Different lineages within the Glires evolved basically opposite chewing movements: a mostly transversal power stroke in lagomorphs, and a mostly proal power stroke in rodents, but the ancestral condition for Glires is still unclear. To address this knowledge gap, we studied the mandibles of Chinese Palaeocene Glires representing the duplicidentate (lagomorph-like; Mimotona) and simplicidentate (rodent-like; Eomylus and Heomys) lineages. To assess the mechanical resistance of mandibles to bending and torsion, we calculated the section modulus. The dentaries differ greatly in morphology and the region where the maximum grinding force was likely applied. The early Palaeocene Mimotona lii and the middle Palaeocene Mimotona robusta and Heomys orientalis all show a pattern of increasing strength moving posteriorly along the mandible, similar to sciurids and the mountain beaver. By contrast, the late Palaeocene Eomylus sp. mandible was strongest in the m1 region, a pattern seen in lagomorphs and the stem placental Zofialestes. Our results indicate the early diversification of mandible structure of Glires, demonstrate a mixture of duplicidentate and simplicidentate characters among the basal Glires and suggest an early occurrence of a lagomorph-like morphotype.This article is part of the theme issue 'The mammalian skull: development, structure and function'.
关键词	Glires Lagomorpha Rodentia Palaeocene mandible morphology
DOI	10.1098/rstb.2022.0087
关键词[WOS]	MONGOLIA ; FORCE ; PALEOCENE ; EVOLUTION ; SKULL
收录类别	SCI
语种	英语
资助项目	IVPP ; National Science Centre (Cracow, Poland)[2015/18/E/NZ8/00637] ; Royal Society ; FMNH ; University of Chicago Library
WOS研究方向	Life Sciences & Biomedicine - Other Topics
WOS类目	Biology
WOS记录号	WOS:000988806100004
出版者	ROYAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22558
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Fostowicz-Frelik, Lucja
作者单位	1.Univ Chicago, Dept Organismal Biol & Anat, Chicago, IL 60637 USA 2.Polish Acad Sci, Inst Paleobiol, PL-00818 Warsaw, Poland 3.UCL, Ctr Integrat Anat, Dept Cell & Dev Biol, London WC1E 6BT, England 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironment, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Fostowicz-Frelik, Lucja,Cox, Philip G.,Li, Qian. Mandibular characteristics of early Glires (Mammalia) reveal mixed rodent and lagomorph morphotypes[J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2023,378(1880):9.
APA	Fostowicz-Frelik, Lucja,Cox, Philip G.,&Li, Qian.(2023).Mandibular characteristics of early Glires (Mammalia) reveal mixed rodent and lagomorph morphotypes.PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,378(1880),9.
MLA	Fostowicz-Frelik, Lucja,et al."Mandibular characteristics of early Glires (Mammalia) reveal mixed rodent and lagomorph morphotypes".PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 378.1880(2023):9.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Mandibular_character（1340KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载