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Geochemical Stratigraphy and Microvertebrate Assemblage Sequences across the Silurian/Devonian Transition in South China

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Acta Geologica Sinica(English Edition) 2011年第2期85卷 340-353页

作者： ZHAO Wenjin WANG Nianzhong ZHU Min ulrich mann ulrich HERTEN Andreas LǖKE Key Laboratory of Evolutionary Systematics of Vertebrates Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China Institute of Chemistry and Dynamics of the Geosphere ICG-4 Research Center Juelich GmbH D-52425 Juelich Germany

Carbon isotope （δ13Corg） analyses of non-marine clastic rocks and neritic carbonates and black shales spanning the Silurian/Devonian transition are compared from two richly fossiliferous sequences in Qujing of East Yunnan and Zoige of Sichuan, South China. The two sections, Xishancun and Putonggou sections in South China, reveal positive δ13Corg shifts happening in the Upper Pridoli and Lower Devonian and reaching peak values as heavy as -25.2‰ （Xishancun） and -19.9‰（Putonggou） in the lowermost Lochkovian following the first occurrence of the thelodont Parathelodus and the conodont Icriodus woschmidti woschmidti （only in Putonggou Section and together with Protathyris-Lanceomyonia brachiopod fauna）. These results replicate a globally known positive shift in δ13Corg from the uppermost Silurian to the lowermost Devonian. The δ13Corg variations across the Silurian/Devonian Boundary （SDB） at the two sections in South China exhibit a shift in carbon isotopic composition similar to the detailed SDB curves from the borehole Klonk-1 drilled at top of the Klonk Global Standard Stratotype-Section and Point （GSSP） in the Prague Basin, Czech Republic. In addition, four microvertebrate assemblages, including the Liaojiaoshan, Xishancun, Yanglugou and Xiaputonggou assemblages, are recognized from the Silurian/Devonian transition exposed in the Xishancun and Putonggou sections, respectively. The results from both carbon isotope stratigraphy and microvertebrate assemblage sequences suggest that the SDB in South China is located at the base of the Xishancun Formation （between sample QX-20 and sample QX-21） in the Xishancun Section and the lower part of the Xiaputonggou Formation （between sample ZP-09 and sample ZP-10） in the Putonggou Section. The isotopic trend for organic carbon together with the changes of microvertebrate remains across the SDB can offer an approach to a potential correlation of the SDB from different sedimentary facies, which help to correlate the marine with no

关键词： Carbon isotope stratigraphy microvertebrate assemblages Silurian-Devonian Boundary marine and non- marine stratigraphic correlation South China

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寿命延长3～5倍——齿轮和轴用密封圈的寿命取决于润滑油

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现代制造 2004年第20期 27-28页

作者： Dr.ulrich mann

通过试验观察到的一些基本规律,有助于提高与润滑油接触的传动部件和密封件的使用寿命。前提是变速机构的设计必须是正确的。

关键词：齿轮使用寿命密封圈润滑材料轴承

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鹅细小病毒VP3基因重组禽痘病毒转移载体的构建

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中国兽医科技 2002年第9期32卷 5-8页

作者：田丽红贾永清王君伟李一经赵丽荣 ulrich Neu mann 东北农业大学动物医学院黑龙江哈尔滨150030 汉诺威兽医学院德国汉诺威30559

从含有鹅细小病毒 (GPV)H1株主要结构蛋白VP3基因的重组质粒pPROEXHTb VP3中切取GPVH 1株VP3基因片段 ,将其亚克隆于 pSY5 3 8的EcoRⅠ位点 ,并将带有痘苗病毒启动子P11的LacZ报告基因平端克隆于上述重组子的SmaⅠ位点 ,再用NotⅠ切下... 详细信息

从含有鹅细小病毒 (GPV)H1株主要结构蛋白VP3基因的重组质粒pPROEXHTb VP3中切取GPVH 1株VP3基因片段 ,将其亚克隆于 pSY5 3 8的EcoRⅠ位点 ,并将带有痘苗病毒启动子P11的LacZ报告基因平端克隆于上述重组子的SmaⅠ位点 ,再用NotⅠ切下同时含有VP3基因和LacZ报告基因的片段 ,亚克隆于pSY681的NotⅠ位点 ,构建了含有VP3基因的重组禽痘病毒转移载体。

关键词：鹅细小病毒 VP3基因重组禽痘病毒转移载体小鹅瘟

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Redescription of Cobitis longipectoralis Zhou, 1992 (Cypriniformes: Cobitidae) from late early Miocene of East China

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Science China Earth Sciences 2010年第7期53卷 945-955页

作者： CHANG Mee-mann Key Laboratory of Evolutionary Systematics of Vertebrates Institute of Vertebrate Paleontology and Palaeoanthropology Chinese Academy of Sciences

Here we revise a fossil cobitid species ■Cobitis longipectoralis Zhou, 1992, based mainly on a well-preserved specimen collected recently from the taxon’s type locality of the late early Miocene of Shanwang, Shandong Province, East China. The new specimen, along with those collected by Zhou, enables us to provide an emended diagnosis and more detailed description of the species by focusing on the characters such as the structures of the suborbital spine and the presence and shape of the lamina circularis at the base of the second pectoral fin ray in adult males, the presence of a frontoparietal fontanelle, and a quad- rate-metapterygoid fenestra, etc. The long pectoral fin, initially considered by Zhou as the most important character of the spe- cies, however, turns out to be not diagnostic for the species. ■Cobitis longipectoralis Zhou, 1992 is not only the most informative and best-preserved early cobitid fossil known thus far but also the only and earliest cobitid fossil from East Asia.

关键词： Cobitis longipectoralis late early Miocene East China

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A new Eocene catostomid (Teleostei: Cypriniformes) from northeastern China and early divergence of Catostomidae

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Science China Earth Sciences 2009年第2期52卷 189-202页

作者： CHANG Mee-mann Key Laboratory of Evolutionary Systematics of Vertebrates Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences

A new Eocene catostomid genus and species,Plesiomyxocyprinus arratiae, is described from Huadian, Jilin Province, northeastern China. The materials include a nearly complete skeleton, dozens of pharyngeal bones with teeth, and a number of disarticulated bones. The new articulated specimen is large-sized and deep-bodied, with an estimated standard length of ca. 300 mm and body depth of 156 mm or about half of its standard length. The assignment of the fish to the Catostomidae is based on its falciform pharyngeal bone with one row of numerous (more than 50) compressed teeth, and the bone is much smaller than in cyprinids, especially given the size of the fish. The new fish distinguishes itself from all known catostomids (both extinct and extant) in its long anal fin with four unbranched and 17-18 branched rays, and its extremely short caudal peduncle that is only about one fourth of its depth. Plesiomyxocyprinus arratiae resembles the Eocene-Oligocene transpacific-distributed Amyzon in many general skeletal characters. However, it shows a few characters uniquely shared with the Recent catostomid Myxocyprinus asiaticus. Those include a very long dorsal fin with about 50 branched fin rays, the end of dorsal fin rays being close to the caudal fin base, and anal rays stretching posteriorly beyond the base of caudal fin. It is the first fossil catostomid that shows a close relationship to the endemic Myxocyprinus now living in the Yangtze River and Minjiang River, China. The discovery of Plesiomyxocyprinus arratiae, along with two previously described possible catostomid genera Jianghanichthys and Vasnetzovia, may indicate that the divergence of the Catostomidae started much earlier, in the middle Eocene or earlier, on the western side of the Pacific than on its eastern side.

关键词： a new catostomid genus Eocene northeastern China early divergence

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Pliocene cyprinids (Cypriniformes,Teleostei) from Kunlun Pass Basin,northeastern Tibetan Plateau and their bearings on development of water system and uplift of the area

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Science China Earth Sciences 2010年第4期53卷 485-500页

作者： CHANG Mee-mann Key Laboratory of Evolutionary Systematics of Vertebrates Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences

Here described are the cyprinid fossils from the Pliocene Lower Member of Qiangtang Formation of the Kunlun Pass Basin,northeastern Tibetan Plateau,collected at a locality 4769 m above the sea level(asl).The materials consist of numerous disarticulated and incomplete bones as well as thousands of pharyngeal teeth,fin rays,and *** fossils were referred to the genus Gymnocypris,lineage Schizothoracini,family Cyprinidae;the lineage Schizothoracini;and the family Cyprinidae *** Schizothoracini is a freshwater fish group endemic to the Tibetan Plateau and its surrounding *** workers on living schizothoracins regarded that Gymnocypris belongs to the highly specialized grade of the group,colonizing higher altitudes than other members of the *** species are so far unequivocally assigned to the genus,i.e.,*** and ***,and they are inhabiting Qinghai Lake and the waters on both north(the Golmud River) and south(upper reach of the Yellow River) sides of the East Kunlun Mountain,*** abundant fossil schizothoracins occur in the Kunlun Pass Basin on the southern slope of the East Kunlun Mountain(at 4769 m asl),close to the present Golmud River,indicating comparatively rich waters in the area and possible connections between the water systems on north and south sides of the East Kunlun Mountain during the *** also suggests a more humid climate in the area during the Pliocene than it is *** presence of the highly specialized schizothoracin Gymnocypris may also imply less amplitude of uplift(approximately 1000 m) in the area since the Pliocene than previously proposed.

关键词： Gymnocypris Schizothoracini Pliocene Kunlun Pass Basin of northeastern Tibetan Plateau development of water system uplift of the area

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Fossil pharyngeal teeth of grass carp group and their implications for evolution, temporal and spatial distribution pattern, and paleoenvironment

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Science China Earth Sciences 2021年第11期64卷 1844-1859页

作者： Ruifeng SU Mee-mann CHANG Gengjiao CHEN Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate of Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China Beijing Institutes of Life Science Chinese Academy of SciencesBeijing 100101China Chinese Academy of Sciences Center for Excellence in Life and Paleoenvironment Beijing 100044China University of Chinese Academy of Sciences Bejing 100049China Natural History Museum of Guangxi Zhuang Autonomous Region Nanning 530012China

Grass carp(Ctenopharyngodon idella)is a cyprinid species,widely living in the freshwater on the plain area of East *** fish has characteristic comb-like pharyngeal teeth,an adaptation to their typical vegetarian feeding *** paper deals with fossil pharyngeal teeth that related to grass carp,found from about 20 localities,ranging from the lower Oligocene to *** on the morphology of the teeth,we established two new genera and species related to the genus Ctenopharyngodon(Dezaoia saintjaquensis,Eoctenopharyngodon liui)and two new species of Ctenopharyngodon(*** and ***).The first recognized *** pharyngeal teeth were from the lower Pliocene of Yushe,Shanxi,and many others from 11 Pleistocene to Holocene *** from the materials and their occurrences,the grass carp may have originated from the western part of China during the early *** the Miocene,the grass-carp-like pharyngeal teeth were discovered from a vast area in China,indicating an appropriate atmosphere for the grass carp to develop,although the climate in the western part of China was possibly drier than that in the eastern *** the beginning of the Pliocene,as the consequence of a considerable uplift of the Tibetan Plateau,the large rivers in East Asia finally formed,created favorable conditions for the Recent grass carp to *** teeth were collected in association with fossil ***,we are using the associated fossil mammals as the checking reference against which to test our interpretation of the surrounding environment of the water system in which the grass carp lived.

关键词： Comb-like pharyngeal teeth Grass carp and grass-carp-like fish Evolution Development of environment

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Spatio-temporal coupled mode theory for nonlocal metasurfaces

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Light(Science & Applications) 2024年第2期13卷 267-282页

作者： Adam Overvig Sander A.mann Andrea Alù Photonics Initiative Advanced Science Research CenterCity University of New YorkNew YorkNY10031USA Physics Program Graduate Center of the City University of New YorkNew YorkNY10016USA

Diffractive nonlocal metasurfaces have recently opened a broad range of exciting developments in nanophotonics research and applications,leveraging spatially extended—yet locally patterned—resonant modes to control light with new degrees of *** conventional grating responses are elegantly captured by temporal coupled mode theory,current approaches are not well equipped to capture the arbitrary spatial response observed in the nascent field of nonlocal ***,we introduce spatio-temporal coupled mode theory(STCMT),capable of elegantly capturing the key features of the resonant response of wavefront-shaping nonlocal *** framework can quantitatively guide nonlocal metasurface design while maintaining compatibility with local metasurface frameworks,making it a powerful tool to rationally design and optimize a broad class of ultrathin optical *** validate this STCMT framework against full-wave simulations of various nonlocal metasurfaces,demonstrating that this tool offers a powerful semi-analytical framework to understand and model the physics and functionality of these devices,without the need for computationally intense full-wave *** also discuss how this model may shed physical insights into nonlocal phenomena in photonics and the functionality of the resulting *** a relevant example,we showcase STCMT’s flexibility by applying it to study and rapidly prototype nonlocal metasurfaces that spatially shape thermal emission.

关键词： theory resonant spatially

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Revision of Cyprinus maomingensis Liu 1957 and the first discovery of Procypris-hke cyprinid(Teleostei, Pisces) from the late Eocene of South China

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Science China Earth Sciences 2015年第7期58卷 1123-1132页

作者： CHEN GengJiao CHANG Mee-mann LIU HuanZhang Natural History Museum of Guangxi Zhuang Autonomous Region State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of Sciences Key Laboratory of Vertebrate Evolutionary and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Institute of Hydrobiology Chinese Academy of Sciences

Fossil cyprinids from the upper part of the upper Eocene Youganwo Formation of Maoming, Guangdong, China were first studied in 1957 by Liu, who referred the only specimen to the genus Cyprinus as a new species, C. maomingensis. And this was suggested as one of the earliest records for fossil cyprinids. Unfortunately, this specimen is poorly preserved and reveals no more morphological information than its serrated last unbranched dorsal and anal fin rays. Recently, some new specimens were unearthed from the same locality, where C. maomingensis was discovered. In addition to the serrated dorsal and anal fin rays, these new materials also show that the pattern and shape of their pharyngeal teeth obviously differ from that of Cyprinus but resemble that of Procypris. However, its number of the branched dorsal fin rays and number of vertebrae are much less than that in Procypris. Morphologically, these specimens are closer to Procypris than to Cyprinus. This is the first report of fossil Procypris-like fish, and it implies that Procypris-like fish is an early member of the Tribe Cyprinini sensu stricto(sensu Yang et al., 2010) and the origin of this group can be traced back at least to the late Eocene.

关键词： late Eocene Procypris-like fish South China

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A new early cyprinin from Oligocene of South China

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Science China Earth Sciences 2011年第4期54卷 481-492页

作者： CHEN GengJiao CHANG Mee-mann Natural History Museum ofGuangxi Zhuang Autonomous Region Nanning 530012 China Key Laboratory of Evolutionary Systematics of Vertebrates Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China

Here we describe tHuashancyprinus robustispinus, gen. et sp. nov, a fossil cyprinin fish from the Oligocene of Ningming Ba- sin, Guangxi, South China. It differs from all other cyprinin fishes in the following apomorphic characters： extremely robust last unbranched dorsal and anal fin rays with very fine serrations along posterior edge, the crowns of pharyngeal teeth A2 and A3 with a number of deep grooves on the lateral wall, rather large A3, and relatively deep infraorbital 2. Among the members of the Tribe Cyprinini sensu stricto, it mostly resembles the extant genus Cyprinus, particularly to species Cyprinus micristius and C. fuxianensis, which are restricted to Yunnan, southwestern China. The discovery of the cyprinin Huashancyprinus from southern China, along with the previously known late Eocene tCyprinus maomingensis, indicates an early branching of the Cyprininae （Cyprinidae） in this area.

关键词： new early cyprinin Oligocene South China

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