Origin and early evolution of Angiosperms in the late Cretaceous of Japan

日本晚白垩世被子植物的起源和早期演化

• 批准号: 07304057
• 负责人: SUZUKI Mitsuo
• 金额: $ 4.1万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07304057/
• 关键词: Angiosperm; origin; evolution; late Cretaceous; phylogeny; Hokkaido; extinction

In 1995, all members independently done their own field researches on the upper Cretaceous sediments looking for Angiosperm and Gymnosperm fossil woods, flowers, fruets, and seeds in Hokkaido. Those fossils were studied anatomically, and some of them were reported preliminary in meetings of the Botanical Society of Japan, Japanese Society of Plant Anatomists, Japanese Paleontological Society, and some others.On late May in 1996, all research members researched the upper Cretaceous sediments at the area of upper streams of Obira River, northwest of Hokkaido, Japan. During the file research many fossil woods, some flowers and fruits of Angiosperms, many fossil woods and cones of Conifers, and some fruits of extinct Gymnosperms were collected. All of those fossils were studied anatomically. In this research two Angiosperm wood specimens were found from the Cenomanian (the earliest period in the late Cretaceous). This is the oldest record of Angiosperm wood in Japan. Wood structure of those woods were preliminary presented at annual meeting of Botanical Society of Japan (Tohoku District Meeting) on December, 1996.

1995年，所有成员都独立进行了自己的现场研究，对北海道的上白垩纪沉积物，寻找被子植物，花朵，水果和种子。这些化石进行了解剖学研究，其中一些化石在日本植物学会，日本植物解剖学家，日本古生物学学会以及其他一些研究中进行了初步研究。1996年5月下旬，所有研究成员研究了Obira Rivers of Obira Rivers of Obira Rivers of Obira Rivers of Obira Rivers of Obira River，Northwest of Northwesto of Enternwesto的上chtimenters。在档案研究中，许多化石木材，一些被子植物的花朵和水果，许多化石树林和针叶树的锥，以及一些灭绝的裸子植物的水果。所有这些化石都在解剖学上进行了研究。在这项研究中，从塞诺曼尼亚人（晚白垩纪最早的时期）发现了两个被子植物木材标本。这是日本被子植物木的最古老的记录。这些树林的木材结构是在1996年12月的日本植物学会（Tohoku地区会议）的年度会议上提出的。

项目成果

Nishida, H., Hayashi, N.: "Cretaceous coleopteran larva fed on a female fructification of extinct gymnosperm" J.Plant Res.109. 327-330 (1996)

Nishida, H., Hayashi, N.：“白垩纪鞘翅目幼虫以灭绝裸子植物的雌性果实为食”J.Plant Res.109。

Nishida,M.and Nishida,H.: "Pinoid woods with resin canals from the Upper Cretaceous of Hokkaido and Saghalien." J Plant Res.108. 161-170 (1995)

Nishida,M. 和 Nishida,H.：“来自北海道和 Saghhalien 上白垩纪的带有树脂通道的松木。”

Nishida,M.,Yoshida,A.and Nishida,H.: "Cretocycas yezonakajimae gen.et sp.nov.,a permineralized cycad petiole from the Upper Crefaceous of Hokkaido." J.Jpn.Bot.71. 223-230 (1996)

Nishida,M.、Yoshida,A. 和 Nishida,H.：“Cretocycas yezonakajimae gen.et sp.nov.，一种来自北海道白垩纪上部的全矿化苏铁叶柄。”

西田治文: "化石が語る種子と果実の歴史" 科学. 66. 286-293 (1996)

Osamu Nishida：“化石讲述的种子和水果的历史”《科学》66. 286-293 (1996)。

鈴木三男: "日本の中生代の双子葉材化石に見られる材形質の特徴(予報)" 日本植物分類学会報. 11. 1-12 (1995)

Mitsuo Suzuki：“日本中生代双子叶植物化石中发现的木材特征（预测）”日本植物分类学会公报 11. 1-12 (1995)。