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A grazing Gomphotherium in Middle Miocene Central Asia, 10 million years prior to the origin of the Elephantidae
Wu, Yan1,2; Deng, Tao1,2,3; Hu, Yaowu1,7; Ma, Jiao1,7; Zhou, Xinying1,2; Mao, Limi4; Zhang, Hanwen5,6; Ye, Jie1; Wang, Shi-Qi1,2,3
2018-05-16
发表期刊SCIENTIFIC REPORTS
ISSN2045-2322
卷号8期号:0页码:1-8
文章类型Article
摘要

Feeding preference of fossil herbivorous mammals, concerning the coevolution of mammalian and floral ecosystems, has become of key research interest. In this paper, phytoliths in dental calculus from two gomphotheriid proboscideans of the middle Miocene Junggar Basin, Central Asia, have been identified, suggesting that Gomphotherium connexum was a mixed feeder, while the phytoliths from G. steinheimense indicates grazing preference. This is the earliest-known proboscidean with a predominantly grazing habit. These results are further confirmed by microwear and isotope analyses. Pollen record reveals an open steppic environment with few trees, indicating an early aridity phase in the Asian interior during the Mid-Miocene Climate Optimum, which might urge a diet remodeling of G. steinheimense. Morphological and cladistic analyses show that G. steinheimense comprises the sister taxon of tetralophodont gomphotheres, which were believed to be the general ancestral stock of derived "true elephantids"; whereas G. connexum represents a more conservative lineage in both feeding behavior and tooth morphology, which subsequently became completely extinct. Therefore, grazing by G. steinheimense may have acted as a behavior preadaptive for aridity, and allowing its lineage evolving new morphological features for surviving later in time. This study displays an interesting example of behavioral adaptation prior to morphological modification.

WOS标题词Science & Technology
DOI10.1038/s41598-018-25909-4
关键词[WOS]Ungulate Mammals ; Dental Microwear ; Oxygen Isotopes ; Feeding Ecology ; Opal Phytoliths ; Tooth Calculus ; Proboscideans ; Evolution ; Diet ; Reconstruction
收录类别SCI ; SSCI ; SSCI
语种英语
项目资助者National Natural Science Foundation of China(41472145 ; Strategic Priority Cultivating Research Program, CAS(XDA20070203 ; National Basic Research Program of China(2015CB953803) ; Youth Innovation Promotion Association of Chinese Academy of Sciences(2018099) ; 41372001 ; XDPB05) ; 41625005 ; 41430102)
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000432271700007
出版者NATURE PUBLISHING GROUP
引用统计
文献类型期刊论文
条目标识符http://119.78.100.205/handle/311034/8311
专题中科院古脊椎所(2000年以后)
通讯作者Wang, Shi-Qi
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.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Econ Stratig & Palaeogeog, Nanjing 210008, Jiangsu, Peoples R China
5.Univ Bristol, Sch Earth Sci, Life Sci Bldg,24 Tyndall Ave, Bristol BS8 1TQ, Avon, England
6.Nat Hist Museum, Earth Sci Dept, Cromwell Rd, London SW7 5BD, England
7.Univ Chinese Acad Sci, Dept Archaeol & Anthropol, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Wu, Yan,Deng, Tao,Hu, Yaowu,et al. A grazing Gomphotherium in Middle Miocene Central Asia, 10 million years prior to the origin of the Elephantidae[J]. SCIENTIFIC REPORTS,2018,8(0):1-8.
APA Wu, Yan.,Deng, Tao.,Hu, Yaowu.,Ma, Jiao.,Zhou, Xinying.,...&Wang, Shi-Qi.(2018).A grazing Gomphotherium in Middle Miocene Central Asia, 10 million years prior to the origin of the Elephantidae.SCIENTIFIC REPORTS,8(0),1-8.
MLA Wu, Yan,et al."A grazing Gomphotherium in Middle Miocene Central Asia, 10 million years prior to the origin of the Elephantidae".SCIENTIFIC REPORTS 8.0(2018):1-8.
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