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.
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