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An Early Carboniferous Flora of the Huadu Locality from South China:Its Taxonomic Composition,Paleophytogeographical Position and Paleoecological Interpretation

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Acta Geologica Sinica(English Edition) 2014年第5期88卷 1341-1351页

作者： NAUGOLNYKH Serge V. jin jianhua State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources School of Life SciencesSun Yat-sen University Geological Institute Russian Academy of Sciences Kazan Federal University

The Huadu flora of Guangdong Province, South China contains the lepidodendrid Lepidodendron shanyangense Wu et He, its putative rhizophore Stigmaria cf. ficoides （Brongniart） Sternberg; sphenophyte s.l. Archaeocalamites scrobiculatus （Brongniart） Stur; bowmanitid Sphenophyllum tenerrimum （Ettingshausen） Stur; pteridophyll Sphenopteris sp. of uncertain taxonomic position; undetermined ferns gen. et sp. nov.; lyginopterid pteridosperm Rhodeopteridium hsianghsiangense （Sze） Zhang, Zhao et Wu, a trigonocarpoid pteridosperm represented by fronds and isolated pinnules of Paripteris gigantea （Sternberg） Gothan, male fructifications of Potoniea sp., and seeds of Trigonocarpus sp. Ecologically, the Early Carboniferous （Visean） Huadu vegetation was divided into two neighboring communities：（1） a near-shore hydrophilous ＂community A＂ with predominating Archaeocalamites and Rhodeopteridium; and （2） a wet forest ＂community B＂ with predominating shrubby trigonocarpalean pteridosperm Paripteris gigantea （Sternberg） Gothan and tall tree-like lepidodendrid Lepidodendron shanyangense Wu et He. The Huadu vegetation was physiognomically similar to present-day low-latitude mangrove forest.

关键词： Lower Carboniferous Huadu flora paleophytogeography paleoecology GuangdongProvince South China

Earliest fossil fruit record of the genus Paliurus(Rhamnaceae) in Eastern Asia

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Science China Earth Sciences 2016年第4期59卷 824-830页

作者： HAN Meng CHEN Gang SHI XiangGang jin jianhua State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life SciencesSun Yat-sen University

The genus Paliurus is characterized by its distinctive orbicular-winged fruits and a trilocular(or bilocular) ovary. Macrofossil records suggested this genus was distributed widely in North America, Europe, and Asia during the Paleogene and Neogene, before its present limitation to Eurasia. In this study, we describe some Paliurus fossil winged fruits from the lower part of Youganwo Formation(middle Eocene) and Huangniuling Formation(late Eocene) of the Maoming Basin, South China. These fruits are recognized as Paliurus favonii Unger based on a detailed study on the fossil morphology and cuticle characteristics. This represents the earliest occurrence of Paliurus fossil fruits in eastern Asia, and to date is the world's lowest latitude appearance for this genus. The most ancient records of Paliurus throughout the world are from the middle Eocene of North America and the late Eocene of Japan, leading some researchers to conclude the Paliurus may have originated in North America. Molecular data, however, do not support this hypothesis. The present Paliurus fossil fruits provide new evidence for the origin and phytogeographic history of this genus.

关键词： Paliurus Fossil fruit Biogeography Eocene South China

Leaf Cuticle Microstructure of Machilus maomingensis ***.(Lauraceae) from the Eocene of the Maoming Basin,South China

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Acta Geologica Sinica(English Edition) 2016年第5期90卷 1561-1571页

作者： TANG Biao HAN Meng XU Qingqing jin jianhua State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life SciencesSun Yat-sen University

Machilus maomingensis jin et Tang,*** the Eocene Youganwo Formation of the Maoming Basin,South China,is studied in detail from the perspective of the leaf architecture and the excellently preserved *** leaf margin is entire,the primary venation is pinnate;6 to 8secondary veins are present and the major secondary venation is *** are paracytic and occur on the lower *** bases are *** cells are present in the upper *** new fossil species described has features of the Lauraceae,particularly of the extant genus Machilus Rumphius ex Nees,and it is most similar to Machilus chinensis（Bentham）Hemsley,an extant species distributed in southern China and ***,Machilus maomingensis *** inferred to live in a warm and humid *** discovery of the present fossil indicates that Machilus has existed in South China from at least the Eocene.

关键词： Machilus maomingensis cuticle Eocene Maoming Basin South China

Asplenium sanshuiense sp. nov.:the Lowest Latitude Fossil Record of the Genus

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Acta Geologica Sinica(English Edition) 2017年第4期91卷 1179-1189页

作者： XU Kewang LIAO Wenbo jin jianhua LIU Xiaoyan State Key Laboratory of Biocontrol Guangdong Provincial Key Laboratory of Plant Resourcesand School of Life SciencesSun Yat-sen University State Key Laboratory of Palaeobiology and Stratigraphy(Nanjing Institute of Geology and Palaeontology CAS)

Extant Asplenium is one of the most widespread fern groups and occurs in the temperate and tropical regions. However, the fossil records of this genus are poorly documented, especially in the low latitudes. Here, a new species, Asplenium sanshuiense sp. nov. is described from the early Eocene of Sanshui Basin, Guangdong Province, South China. This is the lowest modern latitude fossil record of Asplenium and the first fossil assignment of A. section Darea （Jussieu） Bak., as well as the first fossil record of Asplenium reported from South China. This new species shows that Asplenium had already spread into South China by the early Eocene and the section Darea （Jussieu） Bak. was identifiable within the genus Asplenium during that time. This new species, combined with previous fossil spore-pollen records indicates a warm and humid climate in the Sanshui Basin of the early Eocene.

关键词： Asplenium early Eocene Phytogeographical implications Sanshui Basin

Eocene fossil Alseodaphne from Hainan Island of China and its paleoclimatic implications

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Science China Earth Sciences 2009年第10期52卷 1537-1542页

作者： LI jingZhao QIU Jue LIAO WenBo jin jianhua School of Life Sciences Sun Yat-Sen UniversityGuangzhou 510275China

Alseodaphne changchangensis sp. nov. (Lauraceae), with a perfectly preserved fossil leaf, was found in the Eocene Changchang Formation from the Changchang Basin of Hainan Island, China. This represents the earliest occurrence at the lowest latitude for the genus Alseodaphne, and offers important fossil evidence for further investigation of the origin and evolution of this genus and the paleoclimate of Hainan Island in the Eocene. Based on leaf morphology and cuticle characteristics, our fossil specimen is closest to the living species A. hainanensis Merrill, which is distributed mainly in tropical lowland rain forests, tropical montane rain forests, and subtropical montane evergreen broad-leafed forests on Hainan Island, and also found on the Wanshan Islands of Zhuhai of Guangdong Province and in northern parts of Vietnam. In the above areas, the climate factors are similar, i.e., the mean annual temperature is 20–22.6°C, the mean annual range of temperature 12–12.6°C and the mean annual precipitation 1784–2500 mm. Based on the nearest living species analysis, we conclude that the climate of the Changchang Basin on Hainan Island during the Eocene was close to that of the distribution areas of the living A. hainanensis.

关键词： Alseodaphne changchangensis sp. nov. A. hainanensis Merrill Eocene Changchang Basin Hainan Island Lauraceae paleoclimate

Dacrycarpus pattern shedding new light on the early floristic exchange between Asia and Australia

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National Science Review 2019年第6期6卷 1086-1090页

作者： Xinkai Wu Xiaoyan Liu Tatiana Kodrul Cheng Quan jianhua jin State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources School of Life Sciences Sun Yat-sen University Geological Institute Russian Academy of Sciences School of Earth Science and Resources Chang'an University

The recent discovery of mummified Dacrycarpus remains from the Miocene Erzitang Formation of the Guiping Basin, Guangxi, southern China, essentially contests our concepts of floristic exchange between Australia and **... 详细信息

关键词： origin China western Dacrycarpus pattern shedding new light on the early floristic exchange between Asia and Australia

Inspection of pipeline girth welds with ultrasonic phased array technique

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High Technology Letters 2005年第3期11卷 240-244页

作者： Huang jing（黄晶） Que Peiwen jin jianhua Institute of Automatic Detection Shanghai Jiaotong University Shanghai 200030 P.R. China

A novel automatic ultrasonic system used for the inspection of pipeline girth welds is developed, in which a linear phased array transducer using electronic scan is adopted. Optimal array parameters are determined based on a mathematical model of acoustic field for linear phased army derived from Huygens＇ principle. The testing method and the system structure are introduced. The experimental results show that the phased array transducer system has the same detectability as that of conventional ultrasonic transducer system, but the system architecture can be simplified greatly, and the testing flexibility and the testing speed can be improved greatly.

关键词： linear phased array transducer mathematical model of acoustic field pipeline girth welds defect inspection

New coryphoid fossil palm leaves (Arecaceae:Coryphoideae) from the Eocene Changchang Basin of Hainan Island,South China

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Science China Earth Sciences 2013年第9期56卷 1493-1501页

作者： ZHOU WenJun LIU XiaoYan XU QingQing HUANG KangYou jin jianhua State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources School of Life SciencesSun Yat-sen University State Key Laboratory of Palaeobiology and Stratigraphy(Nanjing Institute of Geology and Palaeontology CAS) Department of Earth Sciences Sun Yat-sen University

Modern palms are diverse and widespread in the tropics and subtropics,especially the tropical ***,most fossil palm records have been reported from regions of relatively higher *** this paper seven species of coryphoid palm from the Eocene Changchang Basin of Hainan Island of South China are *** are Sabalites asymmetricus ***.,*** ***.,*** ***.,*** Guo,*** Guo,Livistona sp.,and Amesoneuron *** to leaf morphological characteristics,they can be classified as members of the subfamily *** extant flora of Hainan Island,only three species of Livistona have costapalmate *** palm fossils indicate that,during the Eocene,flora in Hainan Island included a diversity of coryphoid palms,which have some bearings on the reconstruction of the palaeoclimate of South China.

关键词： New coryphoid fossil palm leaves (Arecaceae:Coryphoideae) from the Eocene Changchang Basin of Hainan Island South China

Glacial expansion of cold-tolerant species in low latitudes: megafossil evidence and species distribution modelling

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National Science Review 2023年第4期10卷 13-15页

作者： Luliang Huang Shufeng Li Weiye Huang Helanlin Xiang jianhua jin Alexei A.Oskolski State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life Sciences/School of Ecology Sun Yat-sen University State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Department of Botany and Plant Biotechnology University of Johannesburg Botanical Museum Komarov Botanical Institute of the Russian Academy of Sciences

The Pleistocene was a time of repeated glaciations that severely affected the land biota over large areas of Eurasia and North America. Drastic climatic fluctuations during the Pleistocene drove largescale extinctions, migrations and diversification in plant and animal *** dramatic processes had a strong impact on the distribution of modern flora and fauna.

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