中国重庆巫山县玉米洞鼯鼠化石(鼯鼠科,啮齿目

IF 1.9 4区 地球科学 Q1 PALEONTOLOGY
Li-bo Pang, Shao-kun Chen, Xin Hu, Yan Wu, Guang-biao Wei
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引用次数: 0

摘要

鼯鼠是重要的森林环境指标。中国西南地区晚新生代化石产地对鼯鼠的报道较多,但详细研究相对较少。中国重庆市巫山县鱼米洞出土了大量中更新世晚期的鼯鼠化石,为该类群的形态对比和进一步研究提供了极好的材料。在这一地点已经确认了四个物种,包括 Pteromys volans、Trogopterus xanthipes、Belomys pearsonii 和 Aeretes melanopterus。P. volans和A. melanopterus是适应寒冷环境的古北界物种,自全新世大热时期以来已在研究地区完全灭绝。根据这四个物种的古动物地理学和古生态学分析,可以认为在MIS2和MIS4时期,云密洞地区以亚高山常绿针叶林或针叶与阔叶混交林为主,比现在寒冷,针叶林较多,而MIS3和MIS5时期的植被景观与现在相似。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fossil flying squirrels (Petauristinae, Sciuridae, Rodentia) from the Yumidong Cave in Wushan County, Chongqing, China
Flying squirrels are important forest environment indicators. There have been many reports on them from fossil localities of the Late Cenozoic in southwest China, but relatively few detailed studies have been carried out on them. Numerous flying squirrel fossils of the Mid-Late Pleistocene were unearthed from the Yumidong Cave in Wushan County, Chongqing Municipality, China, providing excellent materials for morphological comparison and further research on this group. Four species have been recognised from this locality, including Pteromys volans, Trogopterus xanthipes, Belomys pearsonii and Aeretes melanopterus. P. volans and A. melanopterus are Palearctic species, which adapted to the cold environment and had been completely extinct in the study area since the Holocene Megathermal period. Based on the analyses of paleozoogeography and paleoecology of these four species, it could be concluded that the Yumidong Cave area was dominated by subalpine evergreen coniferous forest or coniferous and broad-leaved mixed forest during MIS 2 and MIS 4 periods, which were colder and had more coniferous forest than now, while the vegetation landscape of MIS 3 and MIS 5 periods were similar to that of nowadays.
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来源期刊
Fossil Record
Fossil Record PALEONTOLOGY-
CiteScore
3.60
自引率
7.10%
发文量
18
审稿时长
14 weeks
期刊介绍: Fossil Record (FR) is the palaeontological journal of the Museum für Naturkunde Berlin. This journal was founded in 1998 under the name Mitteilungen aus dem Museum für Naturkunde Berlin, Geowissenschaftliche Reihe and appears with two issues each year. Fossil Record publishes original papers in all areas of palaeontology including the taxonomy and systematics of fossil organisms, biostratigraphy, palaeoecology, and evolution. All taxonomic groups are treated, including invertebrates, microfossils, plants, and vertebrates.
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