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

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 中国科学院东亚植物多样性与生物地理学重点实验室

	Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications
	Meng,Hong-Hu; Su,Tao; Huang,Yong-Jiang; Zhu,Hai; Zhou,Zhe-Kun
刊名	JOURNAL OF SYSTEMATICS AND EVOLUTION
	2015-11-01
卷号	53 期号:6 页码:499-511
关键词	biogeography Engelhardieae fossil fruit Juglandaceae late Miocene Palaeocarya
英文摘要	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.
类目[WOS]	Plant Sciences
研究领域[WOS]	Plant Sciences
关键词[WOS]	CHLOROPLAST DNA ; NORTHERN-HEMISPHERE ; FOSSIL FRUITS ; TERTIARY ; PHYLOGENY ; PHYLOGEOGRAPHY ; INTEGRATION ; EVOLUTION ; EUROPE ; EOCENE
收录类别	SCI
语种	英语
WOS记录号	WOS:000363873600003
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/25222]
专题	昆明植物研究所_中国科学院东亚植物多样性与生物地理学重点实验室
推荐引用方式 GB/T 7714	Meng,Hong-Hu,Su,Tao,Huang,Yong-Jiang,et al. Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2015,53(6):499-511.
APA	Meng,Hong-Hu,Su,Tao,Huang,Yong-Jiang,Zhu,Hai,&Zhou,Zhe-Kun.(2015).Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications.JOURNAL OF SYSTEMATICS AND EVOLUTION,53(6),499-511.
MLA	Meng,Hong-Hu,et al."Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications".JOURNAL OF SYSTEMATICS AND EVOLUTION 53.6(2015):499-511.