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New Material of Karakoromys (Ctenodactylidae, Rodentia) from Late Eocene-Early Oligocene of Ulantatal (Nei Mongol): Taxonomy, Diversity, and Response to Climatic Change
Xu, Rancheng1,2; Zhang, Zhaoqun1,2; Li, Qian1; Wang, Bian1
2023-06-01
发表期刊DIVERSITY-BASEL
卷号15期号:6页码:36
摘要The Eocene-Oligocene Transition (EOT) was one of the most profound climate changes in the Cenozoic era, characterized by global cooling around 34 million years ago. This time period also witnessed major faunal turnovers, such as the "Mongolian Remodeling" of Asia, characterized by the dominance of rodents and lagomorphs after the EOT. Previous studies have primarily focused on overall faunal change across the EOT. Here, we examined one genus, the earliest ctenodactylid Karakoromys, based on rich fossils from continuous sections at Ulantatal, Nei Mongol, magnetostragraphically dated to latest Eocene-Early Oligocene. Based on a systematic paleontological study of these fossils, we recognized four species of Karakoromys (Karakoromys decussus, K. arcanus, K. chelkaris, and K. conjunctus sp. nov.), indicating a relatively high diversity of the most primitive ctenodactylids during the latest Eocene-Early Oligocene (similar to 34.9-30.8 Ma). The turnover of ctenodactylids primarily occurred during a regional aridification event around 31 Ma rather than during the EOT cooling event, suggesting that regional precipitation variation in the semi-arid area may have played a more important role than global temperature change in the evolution of early ctenodactylids.
关键词Ulantatal Eocene Oligocene Ctenodactylidae biodiversity aridification
DOI10.3390/d15060744
关键词[WOS]MIDDLE OLIGOCENE ; MAMMALIA ; STRATIGRAPHY ; TEMPERATURE ; EVOLUTION ; ABUNDANCE ; EASTERN ; MARINE ; VALLEY ; LAKES
收录类别SCI
语种英语
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目Biodiversity Conservation ; Ecology
WOS记录号WOS:001014370500001
出版者MDPI
引用统计
文献类型期刊论文
条目标识符http://119.78.100.205/handle/311034/22724
专题中国科学院古脊椎动物与古人类研究所
通讯作者Zhang, Zhaoqun; Li, Qian
作者单位1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
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Xu, Rancheng,Zhang, Zhaoqun,Li, Qian,et al. New Material of Karakoromys (Ctenodactylidae, Rodentia) from Late Eocene-Early Oligocene of Ulantatal (Nei Mongol): Taxonomy, Diversity, and Response to Climatic Change[J]. DIVERSITY-BASEL,2023,15(6):36.
APA Xu, Rancheng,Zhang, Zhaoqun,Li, Qian,&Wang, Bian.(2023).New Material of Karakoromys (Ctenodactylidae, Rodentia) from Late Eocene-Early Oligocene of Ulantatal (Nei Mongol): Taxonomy, Diversity, and Response to Climatic Change.DIVERSITY-BASEL,15(6),36.
MLA Xu, Rancheng,et al."New Material of Karakoromys (Ctenodactylidae, Rodentia) from Late Eocene-Early Oligocene of Ulantatal (Nei Mongol): Taxonomy, Diversity, and Response to Climatic Change".DIVERSITY-BASEL 15.6(2023):36.
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