Volume 58,Issue 3,2019 Table of Contents

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  • 1  Carrying forward national sentiments, serving for country’s needs, and everlasting society glorious mission—Celebrating the 90th Anniversary of the Palaeontological Society of China
    Zhan Ren-bin
    2019, 58(3):275-278. DOI: 10.19800/j.cnki.aps.2019.03.001
    [Abstract](411) [HTML](4) [PDF 313.50 K](1836)
    Abstract:
    中国古生物学会成立于1929年,是我国成立最早的自然科学学术团体之一。从成立至今历经90年,虽然在地质历史中微不足道,但恰恰是这90年的时间,中国的古生物工作者们传承家国情怀,不忘初心,永铸辉煌,逐渐向世人打开了地球46亿年在中国留下的地层书卷,见证了中国古生物学科的发展历程并进一步推动了中国古生物学会的发展和壮大。特此代表理事会,向中国古生物学会90周年华诞表示衷心的祝贺!
    2  90 years of forging ahead,to create brilliant in a new era—Celebrating the 90th Anniversary of the Palaeontological Society of China
    2019, 58(3):279-280. DOI: 10.19800/j.cnki.aps.2019.03.002
    [Abstract](362) [HTML](4) [PDF 161.66 K](1709)
    Abstract:
    The Palaeontological Society of China (PSC) was founded in 1929. In 2019, we celebrate the 90th anniversary of the founding of PSC. It is one of the few societies with a long history in the field of natural sciences in China, showing the milestone significance in the development history of Chinese palaeontology.
    3  THE 3RD NATIONAL CONGRESS OF PSC (SUZHOU) WITH HISTORICAL SIGNIFICANCE
    ZHANG Sen-gui
    2019, 58(3):281-292. DOI: 10.19800/j.cnki.aps.2019.03.003
    [Abstract](783) [HTML](4) [PDF 55.19 M](2963)
    Abstract:
    40 years ago, the 3rd National Congress and the 12th Annual Conference of the Palaeontological Society of China was held in Suzhou of Jiangsu Province. The Congress has historical significance in the Chinese palaeontological development. Since 1979 the Chinese palaeontological research entered a new developmental stage, with excellent achievements springing up in large numbers, and frequent academic exchanges occurring. In the following years, the activities of the Society were more active than ever before, significant increase in membership, the activities of society had regularized. The Chinese paleontologists have returned to the international community with frequent exchanges.
    4  New progresses on palaeontological and stratigraphical studies from the Qinghai-Tibet Plateau and adjacent regions: Preface
    ZHANG Yi-chun
    2019, 58(3):293-295. DOI: 10.19800/j.cnki.aps.2019.03.004
    [Abstract](383) [HTML](4) [PDF 371.22 K](1791)
    Abstract:
    专辑涉及近年来青藏高原及其邻区古生物学与地层学研究新进展,展现古生物学和地层学在揭示深时动、植物多样性、古生物地理变迁、古环境演变等领域的新应用。
    5  LATE ORDOVICIAN OSTRACODS IN NYALAM, SOUTHERN TIBET
    SONG Jun-jun,GUO Wen,QIE Wen-kun,ZHANG Yi-chun,HUANG Jia-yuan,WANG Yu-jue
    2019, 58(3):296-310. DOI: 10.19800/j.cnki.aps.2019.03.005
    [Abstract](584) [HTML](4) [PDF 24.33 M](3214)
    Abstract:
    Ostracods are described for the first time from the Late Ordovician in Nyalam, southern Xizang (Tibet), China. Thirty species belonging to sixteen genera are described and figured from the Jiaqu Formation in the Yalai Waterworks section. The ostracod fauna suggests a probable Sandbian-Katian Age for the Jiaqu Formation. The ecological assemblage of ostracods fauna belongs to the Eifelian Ecotype, which implies a nearshore depositional environment for the Jiaqu Formation. In the diverse ostracod fauna of the Jiaqu Formation, many cosmopolitan or provincial genera are shared in Himalaya, Tarim and South China, suggesting a close biogeographic relationship for the blocks.
    6  MIDDLE PERMIAN FORAMINIFERS FROM THE XILANTA FORMATION IN THE GYANYIMA AREA, BURANG COUNTY, TIBET AND THEIR GEOLOGICAL IMPLICATIONS
    ZHANG Yi-chun,WANG Yue
    2019, 58(3):311-323. DOI: 10.19800/j.cnki.aps.2019.03.006
    [Abstract](470) [HTML](4) [PDF 10.89 M](2264)
    Abstract:
    A slice of Permian limestone blocks, which display block-in-matrix fabric, scattered in the ophiolite melánge within the Yarlung-Tsangpo suture zone. The origin of these limestone blocks has been a focus of debate for decades. The paleobiogeography of the faunas in these limestone blocks is critical in reconstructing the paleogeography. The Gyanyima limestone block is a big limestone block within the ophiolites melánge in Burang County, Tibet. The Xilanta Formation in the Gyanyima limestone block contains diverse foraminifers. They are dominated by Neodiscus, Climacammina, Pachyphloia and Lysites. Other foraminifers include Dagmarita, Deckerella, Globivalvulina, Neoendothyra, Lasiodiscus, Lasiotrochus, Tetrataxis, Geinitzina, Ichthyofrondina, Nodosaria, Nodosinelloides, Agathammina, Septoagathammina and Shanita. The typical Lysites-Shanita assemblage in the fauna suggests a Cimmerian Province that contrast with faunas from the Salt Range of Pakistan and other areas in the Himalaya region in southern Tibet in both paleobiogeography and diversity. Combined with the previous study on the paleobiogeography of fusulines, the Gyanyima limestone block is considered to have originated from a seamount within the Neotethys Ocean. It further suggests that the Neotethys Ocean would have opened to a considerable width to allow for the formation of seamount-type carbonates within this ocean.
    7  MIDDLE PERMIAN FUSULINE FAUNAS FROM THE ZHABUYE AREA, CENTRAL LHASA BLOCK, TIBET AND THEIR PALAEOBIOGEOGRAPHIC IMPLICATIONS
    JU Qi ZHANG Yi-chun,QIAO Feng,XU Hai-peng
    2019, 58(3):324-341. DOI: 10.19800/j.cnki.aps.2019.03.007
    [Abstract](1027) [HTML](4) [PDF 12.07 M](13662)
    Abstract:
    This study describes the Guadalupian (Middle Permian) fusulines from the northern Zhabuye area in the Lhasa Block and discusses their palaeobiogeography. In total, the fusuline fauna comprises 6 genera and 16 species, including Yangchienia tobleri Thompson, Yangchienia haydeni Thompson, Chusenella brevipola (Chen), C. schwagerinaeformis Sheng, C. cf. brevis (Chen), C. sp., Nankinella rarivoluta Wang, Sheng and Zhang, N. complanata Wang, Sheng and Zhang, Kahlerina tenuitheca Wang, Sheng and Zhang, K. pachytheca Kochansky-Devidé and Ramov?, Verbeekina americana Thompson, Wheeler and Danner, V. tenuispira Sheng, Neoschwagerina cheni Sheng, N. colaniae Ozawa, N. craticulifera (Schwager) and N. brevis Thompson, Wheeler and Danner. This fauna suggests a Wordian age, as evidenced by the presence of Kahlerina and the thick spirotheca and less-developed secondary transverse septula in Neoschwagerina species. The fauna from the Zhabuye area is correlatable with the contemporaneous faunas from other regions in the Lhasa Block including the Shiquanhe area, the Xiadong area in Tsochen County, Xainza County and Lhunzhub County. The synchronous appearances of Guadalupian warm-water fusuline faunas in the whole Lhasa Block exhibit a pronounced difference in palaeobiogeography from the Tethys Himalaya region with persistent cold-water brachiopod faunas during the middle and late Permian. It is unlikely that the Lhasa Block and the Tethya Himalaya region adjoined together before the late Triassic. Therefore, it is considered that the Lhasa Block has been separated from the Gondwanaland by Wordian time.
    8  FORMATION IN MOJIANG, YUNNAN AND ITS GEOLOGICAL SIGNIFICANCE
    XIE li,YANG Wen-qiang,FENG Qing-lai,XIE Guo-gang,WANG Xiao-di,JIA Xiao-hui
    2019, 58(3):342-352. DOI: 10.19800/j.cnki.aps.2019.03.008
    [Abstract](525) [HTML](4) [PDF 19.00 M](2143)
    Abstract:
    It has been controversial for a long time on the tectonic evolution of Ailaoshan Ocean Basin since the fossil and sedimentary records implying a deep-sea environment from late Carboniferous to Permian have not been discovered in the Ailaoshan Suture Zone, which represents the Ailaoshan Ocean Basin. This paper reports the Early Carboniferous and Middle Permian radiolarians discovered from the bottom conglomerate of the Upper Triassic Waigucun Formation in the BaLiu area, Mojiang, Yunnan. Well-preserved radiolarians were recovered from four chert pebbles. In total, 11 genera, 14 species, 7 indeterminate species and 1 gen. et sp. indet. were identified. In these chert pebbles, three of them yield the Early Carboniferous radiolarian Assemblage such as Albaillella deflandrei Gourmelon, Albaillella sinuosa Won and Seo, whereas another pebble contains the Middle Permian radiolarian assemblage including Pseudoalbaillella spp., Quadricaulis scalae Caridroit and De Wever, Cauletella sp. and Ishigaum sp. Thus, it is certain that the sedimentary records, which represent a deep-sea environment in the Ailaoshan Suture Zone in the Early Carboniferous and Middle Permian, do exist. Furthermore, it indicates that the Ailaoshan Ocean Basin might have been closed after the Middle Permian. The Ailaoshan suture zone is the same as the Jinshajiang suture zone, exisiting records of sedimentary strata in the Carboniferous and Permian deep-water ocean basins, further suggested that there are the same evolution history in the Ailaoshan suture zone and the Jinshajiang suture zone. The above results provide significant palaeontological evidence for the evolution of the Ailaoshan Paleo-Tethyan Basin.
    9  UPPER CRETACEOUS PLANKTIC FORAMINIFERAL BIOSTRATIGRAPHY AND DETERMINATION OF THE SANTONIAN/CAMPANIAN BOUNDARY IN GONGZA, TINGRI, TIBET
    LI Qi,LI Guo-biao
    2019, 58(3):353-362. DOI: 10.19800/j.cnki.aps.2019.03.009
    [Abstract](385) [HTML](4) [PDF 32.78 M](2614)
    Abstract:
    The Cretaceous is a period of frequent occurrence of major geological events such as oceanic anoxia and biological extinction, and also an important period of global warming. Therefore, the study of the Cretaceous is of great significance to the study of the systematic evolution of the earth in geological history, especially the co-evolution relationship between organisms and environment. The complete stratigraphic sequence of the Upper Cretaceous is preserved in Gongza, Tingri, Tibet. In this paper, well-preserved planktic foraminiferal fossils obtained from the samples of the Gangba Cunkou Formation and Zongshan Formation of the Upper Cretaceous are studied, and 22 species of 8 planktic foraminiferal genera are identified. Four foraminiferal zones are recognized as follows, from bottom to top: Dicarinella asymetrica, Globotruncanita elevata, Globotruncana ventricosa, and Radotruncana calcarata. According to foraminifera fossils, the age of Upper Cretaceous strata of Gongza section should be from the late Cretaceous Santonian-Campanian, and the Santonian/Campanian boundary should be located at the boundary between the Dicarinella asymetrica Zone and the Globotruncanita elevata Zone.
    10  REVIEW ON THE STUDY OF THE CRETACEOUS RUDISTS FROM LHASA BLOCK
    RAO Xin,PENG Bo,CAI Hua-wei
    2019, 58(3):363-371. DOI: 10.19800/j.cnki.aps.2019.03.010
    [Abstract](249) [HTML](4) [PDF 15.40 M](2045)
    Abstract:
    The revision of the rudist taxa previously recorded from the Lhasa Block, allowed the identification of seven valid species in total: Rutonia Bangonghuensis Yang et al., 1982, Auroradiolites biconvexus (Yang et al., 1982), Eoradiolites cf. hedini (Douvillé, 1916), Magallanesia rutogensis Rao et al., 2015, Shajia tibetica Rao et al., 2019, Sellaea sp. and Monopleura sp. The age of this rudist assemblage is Late Aptian to Albian, which was confirmed by the orbitolinid records from the Lhasa Block. The rudist biostratigraphic correlation between Sangzugang Formation and Langshan Formation indicates that the rudist assemblages of these two formations are comparable. The mid-Cretaceous SW Asian/Pacific province was recognized by Rao et al. (2015, 2017, 2019a) based on the occurrence of endemic rudist taxa Auroradiolites and the accompanying polyconitid lineage, Horiopleura haydeni–Praecaprotina–Magallanesia.
    11  THE PALEOCENE/EOCENE BOUNDARY AND THE TETHYAN SHALLOW BENTHIC ZONATION
    ZHANG Qing-hai
    2019, 58(3):372-387. DOI: 10.19800/j.cnki.aps.2019.03.011
    [Abstract](399) [HTML](4) [PDF 16.63 M](2164)
    Abstract:
    In the beginning of the 21 century, the International Commission on Stratigraphy officially defined the Paleocene/Eocene (P/E) boundary as “the onset of carbon isotope excursion” during the Paleocene-Eocene thermal maximum (PETM). However, the topic where the P/E boundary is in the shallow benthic zonation (SBZ) is still in dispute. This paper reviews the last 20 years’ progresses on this topic, and concludes that the P/E boundary should be placed within SBZ5, not at the transition between SBZ4 and SBZ5 as traditionally thought. At the P/E boundary, no evident change in larger foraminiferal composition happens. Within the PETM-CIE recovery (about 50?120 kyr after the CIE onset), however, larger foraminifera experienced a drastic extinction. This extinction event was defined as larger foraminiferal extinction and origination. The larger foraminiferal extinction and origination event, in essence, differs from the larger foraminiferal turnover event. The former is likely caused by short-term seawater eutrophication that might have resulted from intensified continental weathering during the CIE recovery, while the latter represents an evolutionary success during the long-term stay in a stable environment. After reviewing previous studies on the P/E boundary, I think that discontinuity/incompleteness of many sedimentary sections close to the P/E boundary is the main cause for the dispute.
    12  OSTRACOD FAUNA FROM THE YAXICUO FORMATION IN THE HOH XIL BASIN, QINGHAI PROVINCE AND ITS STRATIGRAPHIC SIGNIFICANCE
    SONG Bo-wen LIU Zhi-yuan WEI Yi AI Ke-ke HOU Ya-fei XU Ya-dong,ZHANG Ke-xin
    2019, 58(3):388-401. DOI: 10.19800/j.cnki.aps.2019.03.012
    [Abstract](432) [HTML](4) [PDF 13.28 M](2207)
    Abstract:
    The Hoh Xil Basin is the largest continental Cenozoic basin in the plateau’s interior. However, the stratigraphic age of the Cenozoic sediments of the Hoh Xil Basin remain debated. The Yaxicuo Formation from the Yanshiping area, southern Hoh Xil Basin contains abundant ostracod fossils. The research on this ostracod fauna is important for the study of Cenozoic biostratigraphic correlation for the hinterland of the Tibetan Plateau. In this study, 48 ostracod species belonging to 14 genera are described from the Yaxicuo Formation of the Tongtianhe section. The ostracod fauna can be subdivided into two assemblage zones: Austrocypris cf. posticaudata-Candoniella albicans-Leucocythere tropis assemblage and Ilyocypris errabundis-Darwinula stenimpudica assemblage. Through comparing these ostracod fossils with other ostracod records in the Qaidam Baisn, Luopola Basin, Jianghan Basin and Bohai area etc., we bracket the depositional age of the Yaxicuo Formation of the studied Tongtianhe section as the late Eocene?early Oligocene.
    13  POLLEN AND SPORE ASSEMBLAGES FROM THE MIOCENE MALADUN FORMATION AT HONGTUPO, SONGPAN COUNTY, WESTERN SICHUAN PLATEAU AND THEIR BEARING ON PALAEOENVIRONMENTS
    LIU Geng-wu,LI Jian-guo
    2019, 58(3):402-414. DOI: 10.19800/j.cnki.aps.2019.03.013
    [Abstract](662) [HTML](4) [PDF 35.06 M](3145)
    Abstract:
    Up to now, little is known about the palaeovegetation of the most northeastern part of the great Qinghai-Xizang (Tibet) Plateau during the Neogene time. In this study, we report Miocene pollen and spore assemblages from the Maladun Formation at Hongtupo, a small mountain about 50 km southwest of Songpan County town, Sichuan Province. The palynoflora is characterized by rich presence of Ulmaceae, Betulaceae and abundant Pinaceae pollen with rare spores. Angiosperm pollen occupies 52.9%–84.4% of the total tally. Gymnosperm pollen form 13.8%–44.1% of total pollen and spores. Spores only amount to 1.9%–5.1% of the total assemblage. Other elements in the pollen flora include common Fagaceae (Quercus, Castanea), Salix, Juglandaceae (Juglans, Carya) and minor Liquidambar, Sporotrapoidites, Lonicera, Ephedra, Compositae (Asteraceae), Rosaceae, Leguminosae (Fabaceae), Polygonaceae, Ranunculaceae, Lythraceae etc. Such a pollen flora represents a mixed broadleaved and conifer forest. The pollen flora of the Hongtupo is of late Early Miocene to early Middle-Miocene age based on the correlation with the similar pollen assemblage from the Lengshuigou Formation of Weihe Basin which was dated by the associated vertebrate fossils. The palaeoclimate derived from the pollen flora should be of cold temperate to temperate with an annual temperature of about 8℃–13℃. The present pollen flora shows a much less warm appearance than those of the similar age pollen floras from northern and eastern China, which leads to a deduction of palaeoaltitude at the fossil locality of over 1000 m to about 2000 m above sea level. It is interesting that the pollen flora also contains some warm-loving elements such as Liquidambar and Juglandaceae pollen, which probably implies the Miocene Hongtupo area was neighbored by a low terrace or valley landscape.
    14  A BRIEF REVIEW OF POPULUS FOSSILS FROM THE TIBETAN PLATEAU
    SHI Gong-le, AI Ke-ke,SONG Bo-wen,ZHANG Ke-xin
    2019, 58(3):415-423. DOI: 10.19800/j.cnki.aps.2019.03.014
    [Abstract](887) [HTML](4) [PDF 21.00 M](14466)
    Abstract:
    Populus L. is an ecologically important tree genus in the Northern Hemisphere temperate forest. In this paper we summarize the Populus fossil records from the Paleogene and Neogene of the Tibetan Plateau with updated stratigraphic and chronological data. Fossil evidence shows that Populus first occurred in the plateau in the latest Eocene. The genus is well-documented in the southern and northern Tibetan Plateau in the Oligocene and Miocene, but lacking in the central plateau. Most of the fossil floras in the Tibetan Plateau containing Populus are temperate, deciduous and broadleaved, riparian vegetation, further confirming that the genus had favored a temperate and riparian environment in their early evolutionary history. Besides, the high diversity and prominent dominance of Populus in early Oligocene flora in the northern Tibetan Plateau suggests this region had played an important role in the early diversification stage of Populus.
    15  NEW EDITORIAL COMMITTEE OF ACTA PALAEONTOLOGICAL SINICA ESTABLISHED
    2019, 58(3):424-424. DOI: 10.19800/j.cnki.aps.2019.03.015
    [Abstract](414) [HTML](4) [PDF 94.75 K](1621)
    Abstract:
    With the support of the council of the Palaeontological Society of China and sponsored by the Nanjing Institute of Geology and Paleontology of Chinese Academy of Sciences, the new editorial committee of Acta Palaeontological Sinica was established in June of 2019. The academician, Prof. Rong Jia-yu acts as Honorary Editor-in-Chief, Wang Yong-dong serves as Editor-in-Chief, Deng Tao, Huang Bing, Jin Jian-hua, Wang Bo, Xie Shu-cheng and Zhang Zhi-fei serve as Deputy Editors-in-Chief. Twenty-five active and leading palaeontologists from different institutions of China serve as editorial board members, and seven distinguished paleontologists from Germany, UK, France, Japan, Romania and Norway serve as the overseas editorial board members.

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