Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
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Conifer Fossils from the Lower Cretaceous Youngdong Group and Their Paleoclimatic Implication

하부 백악계 영동층군에서 산출된 구과류 화석과 고기후적 의미

  • Published : 2009.08.31
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Abstract

A large number of fossil plants were collected from the Lower Cretaceous Youngdong Group in the Youngdong area of Chungcheongbug-do, Korea. Youngdong flora consists of 5 genera and 6 species, such as Frenelopsis cf. alata, Pseudofrenelopsis cf. parceramosa, P. cf. varians, Brachyphyllum cf. vulgare, Pagiophyllum sp., and Classostrobus sp., including the male and female cones of Pseudofrenelopsis first occurred in the study area. All of them belong to conifers of Cheirolepidiaceae. It is presumed that Youngdong flora might have flourished under the arid subtropical climate during the middle-late Early Cretaceous.

충북 영동 지역에 분포하는 하부 백악계 영동층군에서 식물화석이 많이 산출되었다. 영동 식물군은 이번에 처음 산출된 Pseudofrenelopsis의 자성생식기관과 웅성생식기관을 포함하여 Frenelopsis cf. alata, Pseudofrenelopsis cf. parceramosa, P. cf. varians, Brachyphyllum cf. vulgare, Pagiophyllum sp. 및 Classostrobus sp.의 5속 6종으로 구성된다. 이들은 모두 케이로레피드과에 속한다. 영동 식물군은 전기 백악기 중기-후기에 아열대의 건조한 기후 하에서 번성한 것으로 추정된다.

Keywords

References

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