Early diversification of early Cretaceous Angiosperms in Mongolia

蒙古早白垩世被子植物的早期多样化

• 批准号: 21405010
• 负责人: TAKAHASHI Masamichi
• 金额: $ 12.4万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21405010/
• 关键词: 白亜紀; 被子植物; 初期進化; 小型炭化化石; モンゴル; 炭素同位体比; 古気候; 大型加速器; 炭素同位体

We performed field trips of Cretaceous sediments in Mongolia for five times during 2009 to 2011. The main localities are Baganuur, Khuren Dukh, Tevshiin Govi, Tugrug, Shivee Ovoo, Shine Khudak, Bayan and Erhert in southeastern side of Govi desert. The members are from Mongolian Paleontological Center, Yale University, Chicago Botanical Garden, Kanazawa University and Niigata University. We present preliminary results on the Tevshiin-Govi locality, which is a small opencast lignite mine, southwest of Ulaanbaatar. At several levels in the mine, mummified fossil plants occur matted together in compressed, lignitic, but otherwise very little altered deposits that are dominated by linear leaves of several different kinds. Cuticular details are well-preserved and reproductive structures are diverse, informative and common. Preliminary study indicates the presence of at least a dozen fossil seedplants represented by a large number of dispersed plant organs. We also performed a field survey in Malaysia with Prof. Lee, Malay University, to compare with theresults from Mongolia.

2009 - 2011年，我们对蒙古白垩纪沉积物进行了5次实地考察。主要分布在戈维沙漠东南侧的巴格努尔、库伦杜赫、特夫什因戈维、图格格、希维乌沃、希恩库达克、巴扬和埃尔赫特。成员分别来自蒙古古生物中心、耶鲁大学、芝加哥植物园、金泽大学和新泻大学。我们介绍了Tevshiin-Govi地区的初步结果，这是乌兰巴托西南部的一个小型露天褐煤矿。在矿井的几个层次上，干尸化的植物化石在压缩的木质素中交织在一起，但除此之外，几乎没有变化的沉积物，主要是几种不同种类的线状叶片。表皮细节保存完好，生殖结构多样，信息丰富，常见。初步研究表明，至少有十几种种子植物化石存在，这些种子植物以大量分散的植物器官为代表。我们还与马来大学的李教授一起在马来西亚进行了实地调查，以与蒙古的结果进行比较。

项目成果

Inner structure of Cretaceous fossil flower revealed by X-Ray Microtomography (XRMT)

X射线显微断层扫描（XRMT）揭示白垩纪化石花的内部结构

• 发表时间: 2010
• 期刊: SPring-8 Research Frontiers
• 作者: Takahashi;M
• 通讯作者: M

Polycyclic aromatic hydrocarbons in the Jurassic–Cretaceous Tetori Group, central Japan

• DOI: 10.1111/j.1440-1738.2010.00720.x
• 发表时间: 2011-03
• 期刊: Island Arc
• 影响因子: 1.5
• 作者: T. Hasegawa;Tsuyoshi Hibino

Microtomography analyses of fossil flowers from the Late Cretaceous of Georgia

乔治亚白垩纪晚期花卉化石的显微断层扫描分析

• 发表时间: 2010
• 作者: Herendeen;P. S. Takahashi;M.;Crane;P
• 通讯作者: P

Structurally preserved Nilssoniopteris from the Arida Formation (Barremian, Lower Cretaceous) of southwest Japan.

• DOI: 10.1016/j.revpalbo.2009.04.006
• 发表时间: 2009-09
• 期刊: Review of Palaeobotany and Palynology
• 影响因子: 1.9
• 作者: T. Yamada;J. Legrand;H. Nishida

Submillennial resolution carbon isotope stratigraphy across the Oceanic Anoxic Event 2 horizon in the Tappu section, Hokkaido, Japan.

日本北海道塔布地区海洋缺氧事件 2 地平线的亚千年分辨率碳同位素地层。

• 发表时间: 2011
• 期刊: Palaeogeography Palaeoclimatology Palaeoecology
• 影响因子: 3
• 作者: Nemoto;T. and Hasegawa;T.
• 通讯作者: T.