台湾晚中新世树突树属首次记录,1830年(核螨亚:树突树科)

IF 0.8 4区 地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY Terrestrial, Atmospheric and Oceanic Sciences Pub Date : 2021-01-01 DOI:10.3319/tao.2021.09.13.02
L. Ribas-Deulofeu, Yen-Chun Wang, C. Lin
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引用次数: 2

摘要

最近在台湾北部榆林大汉江沿岸的露头,发现了种类繁多的海洋化石,包括软体动物、鲨鱼和鳐齿、沙棘和各种鱼类的耳石。此外,还发现了许多小而脆弱的硬核动物化石,并将其鉴定为dendrophyl - sp.,主要来自偶氮黄藻(90%)dendrophylliid科。露头岩性主要为晚中新世塔浦组灰色砂岩,覆以玄武岩凝灰岩层。塔堡组与下伏南创组界线的绝对年龄为8 Ma,为本研究发现的石核系化石的最大年龄提供了指示。根据之前报道的鱼类耳石的综合存在,当时,这些样本生长的海洋生态系统可能是一个浑浊的浅海岸环境,底部泥泞到沙质,可能在河口附近。据我们所知,这是台湾首次记录到树突化石。
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First record of Late Miocene Dendrophyllia de Blainville, 1830 (Scleractinia: Dendrophylliidae) in Taiwan
The recently exposed outcrops along the Dahan River in Shulin, northern Taiwan revealed diverse and abundant marine fossils including molluscs, shark and ray teeth, sand dollars, and otoliths from a wide range of fish taxa. In addition, numerous small and fragile fossil scleractinians were found and identified here as Dendrophyl-lia sp., from the mainly azooxanthellate (90%) dendrophylliid family. Lithology of the outcrops are mainly composed of grey sandstones from the Tapu Formation (Late Miocene), overlying on a layer of basaltic tuff. The absolute age of the boundary be-tween the Tapu Formation and the underlying Nanchuang Formation is 8 Ma, which provides indications on the maximum age possible for the scleractinian fossils found in this study. Back then, the marine ecosystem in which the sampled Dendropyllia specimens grew was probably a turbid shallow coastal environment with muddy to sandy bottom, likely at the vicinity of a river estuary, as suggested by the combined presence of previously reported fish otoliths. To our knowledge, this is the first record of Dendrophyllia fossils from Taiwan.
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来源期刊
CiteScore
2.00
自引率
0.00%
发文量
29
审稿时长
4.5 months
期刊介绍: The major publication of the Chinese Geoscience Union (located in Taipei) since 1990, the journal of Terrestrial, Atmospheric and Oceanic Sciences (TAO) publishes bi-monthly scientific research articles, notes, correspondences and reviews in all disciplines of the Earth sciences. It is the amalgamation of the following journals: Papers in Meteorological Research (published by the Meteorological Society of the ROC) since Vol. 12, No. 2 Bulletin of Geophysics (published by the Institute of Geophysics, National Central University) since No. 27 Acta Oceanographica Taiwanica (published by the Institute of Oceanography, National Taiwan University) since Vol. 42.
期刊最新文献
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