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New occurrence of Triassic gymnosperm wood at the Ricker Hills, southern Victoria Land, Antarctica

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Title
New occurrence of Triassic gymnosperm wood at the Ricker Hills, southern Victoria Land, Antarctica
Other Titles
남극 빅토리아랜드 리커힐에서 산출되는 삼첩기 gymnosperm 연구
Authors
Oh, Changhwan
Lee, Jae Hyuk
Woo, Jusun
Lee, Jong Ik
Subject
Plant Sciences; Paleontology
Keywords
Agathoxylon; Beacon Supergroup; Corystospermales; Fossil wood; Kykloxylon
Issue Date
2019-02
Citation
Oh, Changhwan, et al. 2019. "New occurrence of Triassic gymnosperm wood at the Ricker Hills, southern Victoria Land, Antarctica". REVIEW OF PALAEOBOTANY AND PALYNOLOGY, 261(1): 95-102.
Abstract
During the 2016 Antarctic summer season, the fourth Korea Antarctic Geological Expedition (KAGEX IV) investigated the Ricker Hills in southern Victoria Land, Antarctica and collected 33 specimens of fossilwood froman outcrop of Triassic Beacon sandstone in a small basin, Ricker Hills area. Based on anatomical features, four specimens can be identified as belonging to the seed-fern wood Kykloxylon sp. (Corystospermales). A specimen is identified as Agathoxylon sp. and it is the first report of the genus fromthe Triassic deposits in Victoria Land, Antarctica.We are able to reconfirm that corystosperm trees were a dominant component of the Triassic forest vegetation in Antarctica,with minor occurrences of Agathoxylon trees of yet uncertain affinities from those results. In addition, the new occurrence of Agathoxylon at the Ricker Hills also shows us that there is still a shortage of fossil wood studies in Victoria Land.
URI
https://repository.kopri.re.kr/handle/201206/10889
DOI
http://dx.doi.org/10.1016/j.revpalbo.2018.11.006
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