한국지구과학회지 (Journal of the Korean earth science society)

  • 제36권2호
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  • Pages.181-189
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  • 2015
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  • 1225-6692(pISSN)
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  • 2287-4518(eISSN)
한국지구과학회 (The Korean Earth Science Society)
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남포층군의 아미산층에서 산출된 패갑류 화석

Fossil Conchostraca from the Amisan Formation of the Nampo Group, Korea

  • 김종헌 (공주대학교 지구과학교육과) ;
  • 이귀형 (천안여자고등학교)
  • 투고 : 2014.10.16
  • 심사 : 2015.01.15
  • 발행 : 2015.04.30
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초록

충청남도 서부에 분포하는 아미산층에서 많은 패갑류 화석이 채집되었다. 이들 화석은 아미산층의 여러 층준에서 밀집된 상태로 산출되며, 아열대 기후의 담수 환경에서 번성한 것으로 추정된다. 아미산층산 패갑류 화석은 다음과 같이 3속 4종으로 분류되었다: Euestheria kawasakii, E. shimamurai, Sphaerestheria koreanica, 그리고 Cyclestherioides rampoensis. 그중에서 후자는 이전에 아미산층에서 기록된 종이고, 나머지 3종은 새로이 발견된 종이다. 패갑류 화석에 의한 아미산층의 지질 시대는 후기 트라이아스기로 추정된다.

A large number of fossil conchostraca used in this study were collected from the Amisan Formation distributed in the western part of Chungnam, Korea. These fossils were densely discovered in several horizons of the Amisan Formation, and might have flourished in the fresh water environment of subtropical climate. The fossil conchostraca from the Amisan Formation were classified into four species belonging to three genera as follows: Euestheria kawasakii, E. shimamurai, Sphaerestheria koreanica, and Cyclestherioides rampoensis. Out of four species, the last species was previously described from the Amisan Formation, and the other three species were newly found. Based on the fossil conchostraca, it is inferred that the geological age of the Amisan Formation falls under the Late Triassic Period.

키워드

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