The floral sequence from the Late Miocene to Pliocene in the southwestern Japan-The extinction of the Miocene element and modernization of plant species

日本西南部晚中新世至上新世的花卉序列——中新世元素的灭绝与植物物种的现代化

• 批准号: 08640597
• 负责人: TSUKAGOSHI Minoru
• 金额: $ 1.41万
• 依托单位: Osaka Museum of Natural History
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640597/
• 关键词: Plant; Fossil; Miocene; Pliocene; Seto Group; Tokoname Group; Age Group; Fagus

The floral sequence form the Late Miocene to Pliocene in the southwestern Japan has studied. The paleobotanical survery about the Tokai Group has carried out. The floral sequence of the Tokai Group is devided following four horizons.Horizon I : Pinus trifolia flora (The Late Miocene)The Tokiguchi Porcelain Clay Formation and Seto Porcelain Clay Formation have yeilded this flora.Horizon II : The flora which accompanies with the Miocene element and is absent from the extinct genus. (The Latest Miocene to early Pliocene)The Toyooka Formation, lower part of Hutto Formation and Toki Sand and Gravel Formation at the Kasahara-cho have yielded this flora. The following Miocene elements occur ; Pinus trifolia, Paliurus protonipponicus, Parrotia pristina, Fagus stuxbergii, Liquidambar protopalmata, Populus sanbonsugii.Horizon III : the Metasequoia flora in flourish age. (The late Pliocene)The lower part of the Age Group has yielded this flora.Horizon IV : The Metasequoia flora in wxtinct age. (The early Pleistocene)The upper part of the Age Group hs yielded this flora.These results suggest there are the extinct event at the end of the Miocene and some stage of extinction in the Pliocene.

本文研究了日本西南部晚中新世至上新世植物群序列。对东海群进行了古植物学调查。东海群植物区系序列可划分为四个层位：层位Ⅰ：晚中新世的三叶松（Pinus trifolia）植物区系，该植物区系形成于Tokiguchi瓷土组和濑户瓷土组，层位Ⅱ：与中新世成分相伴的植物群，不存在于已灭绝的属中。(The晚中新世至上新世早期）丰冈组、Hutto组下部和笠原町的Toki砂砾石组产生了这一植物群。中新世有三叶松（Pinus trifolia）、原日本马蹄莲（Paliurus protonipponicus）、Parrotia普里什蒂纳、水青冈（Fagus stuxbermata）、枫香（Liquidambar protopalmata）、三宝杨（Populus sanbonsunami）植物群。(The上新世晚期），该时代群的下部已产出该植物群。层位IV：晚期水杉植物群。(The早更新世），这一植物群的时代群的上半部分，表明在中新世末有灭绝事件，上新世有一定的灭绝阶段。

项目成果

Tsukagoshi M., Ono Y., Hashimoto T.: "Fossil endocarp of Davidia from the Early Pleistocene sediments of the Tokai Group in Gifu prefecture, central Japan." Bull.Osaka Mus.Nat.Hist.No.51. 13-23 (1997)

Tsukagoshi M.、Ono Y.、Hashimoto T.：“日本中部岐阜县东海群早更新世沉积物中的珙桐内果皮化石。”

Tsukagoshi M., Ono, Y., Hashimoto T.: "Fossil endocarp of Davidia from the Early Pleistocene sediments of the Tokai Group in Gifu Prefecture, central Japan" Bulletin of Osaka Museum of Natural History. 51. 13-23 (1997)

Tsukagoshi M.、Ono, Y.、Hashimoto T.：“日本中部岐阜县东海群早更新世沉积物中的珙桐内果皮化石”，大阪自然历史博物馆通报。

Minoru Tsukagoshi,Yasuo Ono and Tadashi Hashimoti: "Fossil endocarp of Davidia from the Early Pleistocene sediments of the Takai Group in Gifu Prefecture,central Japan" Bulletin of the Osaka Museum of Natural History. 51. 13-23 (1997)

Minoru Tsukagoshi、Yasuo Ono 和 Tadashi Hashimoti：“来自日本中部岐阜县高井群早更新世沉积物的珙桐化石内果皮”大阪自然历史博物馆公告。