Unionidae (Bivalvia; Palaeoheterodonta) from the Palaeogene of northern Vietnam: exploring the origins of the modern East Asian freshwater bivalve fauna
Unionidae (Bivalvia; Palaeoheterodonta) from the Palaeogene of northern Vietnam: exploring the origins of the modern East Asian freshwater bivalve fauna
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DOI：
10.1080/14772019.2012.665085
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发表时间：
2013-04-01
影响因子：
2.6
通讯作者：
Prieto, Jerome
中科院分区：
文献类型：
--
作者：
Schneider, Simon;Boehme, Madelaine;Prieto, Jerome
越南北方两个新生代拉分盆地（Na Duong和曹邦盆地）沉积的始新世/渐新世沉积物中，产出了几个丰富且保存完好的蚌类双壳类组合。本研究概述了这些社区的蚌科的分类，并详细描述和说明了所有分类群。据我们所知，这是第一个全面的处理新生代蚌科从东南亚。九个分类群中有八个被描述为新的科学。四种广氏楔拟石蛾，mothanica，Cristaria mothanica sp. nov.，其中，镰肋冠蚌Cristaria falcatocostata sp. nov.和洪氏丽蚌Lamprotula hungi sp. nov.其余物种的属的位置是模棱两可的（？cunhatia nov.，?楔形拟石蛾属，? Lanceolaria sp.，?（Lamprotula sp.）或保持试探性（Anodontini sp.）。根据东南亚新生代构造历史和密切相关的水系演化，讨论和解释了化石类群与现代物种的系统关系。研究结果证实了蚌类化石与长江、珠江和红河流域现代蚌类动物群的密切关系。此外，来自曹邦和拿阳的化石是所有已确定属的最早确认记录之一，因此记录了现代东亚和东南亚双壳动物群发展的重要早期阶段。http://zoobank.org/urn:lsid:zoobank.org:pub:D52F10F0-1AFF-4EFD-B724-692E982143E4
Eocene/Oligocene sediments deposited in two Cenozoic pull-apart basins in northern Vietnam, i.e. the Na Duong and Cao Bang basins, yield several rich and well-preserved assemblages of unionid bivalves. This study outlines the taxonomy of the Unionidae from these communities, and all taxa are described and illustrated in detail. As far as we are aware, this is the first comprehensive treatment of Cenozoic Unionidae from South-East Asia. Eight of the nine taxa are described as new to science. Four species Cuneopsis quangi sp. nov., Cristaria mothanica sp. nov., Cristaria falcatocostata sp. nov. and Lamprotula hungi sp. nov. can be confidently assigned to modern genera. The generic position of the remaining species is equivocal (?Nodularia cunhatia sp. nov., ?Cuneopsis sp., ?Lanceolaria sp., ?Lamprotula sp.) or remains tentative (Anodontini sp.). The phyletic relationships of the fossil taxa to modern species are discussed and interpreted in light of the Cenozoic tectonic history of South-East Asia and the intimately associated evolution of drainage systems. The results confirm a close relationship of the fossil unionids to the modern mussel fauna of the Yangtze, Pearl and Red River catchment areas. Moreover, the fossils from Cao Bang and Na Duong are among the earliest confirmed records of all genera identified, and thus document an important, early stage in the development of the modern East and South-East Asian bivalve faunas. http://zoobank.org/urn:lsid:zoobank.org:pub:D52F10F0-1AFF-4EFD-B724-692E982143E4