朝鮮咸鏡北道弓心炭坑産 Cedrela に就いて
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概要
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The distinctive winged fossil seed, collected by the present writer from the Kyusin Coal Mine, Kankyo-Hokudo, Tyosen, is quite similar to and only slightly differs from those of the seeds of Cedrela, especially one of its existing species C., mexicana ROEMER of Mexico and West Indies., It resembles more closely Cedrela pteraformis BROWN from the Latah formation of Spokane, Washington, United States of America, both being almost identical in every respect., The present fossil is now provisionally referred to the American fossil species., This is the first record of fossil Cedrela, from East Asia, and the plant fossils found in its association from the Cedrela bed are listed in the table on p., 225., On these fossils, the Cedrela bed is believed to be nearly contemporaneous with the Engelhardtia bed (Miocene) of Kankyo-Hokudo, Tyosen.,
- 日本地質学会の論文
- 1943-08-20
日本地質学会 | 論文
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