Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 古生态研究组

	Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications
	Zhou, Zhe-Kun; Su, Tao
刊名	JOURNAL OF SYSTEMATICS AND EVOLUTION
	2015
卷号	53 期号:6 页码:499-511
关键词	CHLOROPLAST DNA NORTHERN-HEMISPHERE FOSSIL FRUITS TERTIARY PHYLOGENY PHYLOGEOGRAPHY INTEGRATION EVOLUTION EUROPE EOCENE
ISSN号	1674-4918
中文摘要	Fossil fruits of Palaeocarya (Juglandaceae) are described from late Miocene sediments of southeastern Yunnan, China. The fruits present a tri-lobed wing consisting of an intact oblong-ovate middle lobe and two lateral lobes. The lobes are apically obovate, and have pinnate venation. The middle lobe is thicker at the base and gradually tapers to the apex. The nutlet, located at the base of the winged fruit, is round and hispid, and is subdivided by a septum into two compartments. Based on extensive morphological comparisons to previously documented fossil fruits, we found that the fossil fruits align most closely with members of the genus Palaeocarya, but have a unique combination of characters. Thus, we describe the fossils as a new species, Palaeocarya hispida sp. nov. This species represents an important range expansion for low-latitude occurrences of Palaeocarya in the late Miocene and therefore substantially improves our understanding of the biogeographic history of the genus. We propose that the wide distribution of Palaeocarya and relatively narrow distributions of close relatives, Engelhardia, Alfaropsis, and Oreomunnea, might be associated with a stepwise cooling and a major ice sheet expansion in the Antarctic and Arctic from the late middle Miocene to early Pliocene. In particular, the climatic oscillations during the Quaternary, such as the last glacial maximum, might have led to a decrease in the geographic distribution of Engelhardieae.
原文出处	10.1111/jse.12145
语种	英语
公开日期	2015-12-08
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/9537]
专题	西双版纳热带植物园_古生态研究组
通讯作者	Zhou, Zhe-Kun
推荐引用方式 GB/T 7714	Zhou, Zhe-Kun,Su, Tao. Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2015,53(6):499-511.
APA	Zhou, Zhe-Kun,&Su, Tao.(2015).Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications.JOURNAL OF SYSTEMATICS AND EVOLUTION,53(6),499-511.
MLA	Zhou, Zhe-Kun,et al."Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications".JOURNAL OF SYSTEMATICS AND EVOLUTION 53.6(2015):499-511.