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논문 기본 정보

자료유형
학술저널
저자정보
Ke-Qin Gao (Peking University) Quanguo Ll (Beijing Museum of Natural History) MINGRUI WEI (Beijing Museum of Natural History) HyonUk Pak (Korean Academy of Sciences) Insop Pak (Korean Academy of Sciences)
저널정보
한국고생물학회 고생물학회지 고생물학회지 제25권 제1호
발행연도
2009.6
수록면
57 - 61 (5page)

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초록· 키워드

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The Lower Cretaceous Sinuiju Series of the Jasong Supergroup (=Jasong System of Pak and Kim, 1996) developed in the Amnok River Basin, North Korea, has yielded a potentially important vertebrate fauna, the taxonomic components of which are closely similar to those of the Jehol Biota best known from the Yixian and Chiufotang (=Jiufotang) formations in western Liaoning province, China (Chang et al., 2003; Zhou et al., 2003). The fossil-bearing beds of the Sinuiju Series consist of lacustrine fine-grained sandstones, mudstones, tuffaceous shales and andesites with a total thickness of over 2500 meters (Pak and Kim, 1996). Stratigraphically, the Sinuiju Series rests unconformably on top of Paleo-proterozoic metamorphic rocks, and underlies the Cretaceous Taebo Supergroup and Palaeogene strata. The age of the Sinuiju Series was thought to be Late Jurassic (Pak and Kim, 1996), but the strata contain the characteristic Eosestheria-Ephemeropsis-Lycoptera complex of the Jehol Biota, supporting an Early Cretaceous age of the Series (see also Lee et al., 2001). Accordingly, the Sinuiju fauna signifies the geographic extension of the Jehol Biota from northeast China into the Korean Peninsula. Vertebrate fossils were found at a road-cut approximately six kilometers south of the city of Sinuiju (Figure 1). The fossil specimens already excavated from this site include Lycoptera and sturgeon fishes, anuran amphibians, several birds, possible theropod dinosaurs, and pterosaurs; none of these have been described in scientific publication, and the taxonomic status has remained uncertain ever since their discovery. Most of the fossils are preserved as dorso-ventral compressions as commonly seen in the Liaoning beds, but occur in dark shales that denote a slightly different depositional environment than the Yixian and Chiufotang formations in western Liaoning, China.

목차

Abstract
Fossil birds
Pterosaurs
ACKNOWLDEGEMENT
REFERENCES

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