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한국고생물학회 고생물학회지 한국고생물학회지 제12권 제2호
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    초록·키워드

    Radiolarian faunas are found and described for the first time from sediments of the Pohang Tertiary basin. Eleven samples collected from the Duho Formation in Sodongri area yielded a total of 103 species belonging to 62 genera. They are well preserved, and occur with diatoms, silicoflagellates, ebridian and spongy spicules, which are not further investigated in this study. The faunas are dominated by cold-water taxa such as Botryopyle dictyocephalus, Lithelius minor, Spongopyle osculosa, Stylodictya validispina, Antarctissa strelkovi, Saccospyris antarctica, Peripyramis circumtexta, and Tricerasypris antarctica indicating strong influence of cold-water current during deposition of the Duho formation of the Sodongri area. Based on the last occurrence of Cyrtocapsella tetrapera the studied sequence is not younger than late Middle Miocene (11.95 Ma; Theyer et al. 1978). This age is in well agreement with the hitherto known age of 12 Ma obtained from the equivalent sequence, and locality by other fossil groups.

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      UCI(KEPA) : I410-ECN-0101-2010-457-002181868