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，所有成员独立对北海道白垩纪上层沉积物进行了实地研究，寻找被子植物和裸子植物的木材化石、花卉、果实和种子。对这些化石进行了解剖学研究，其中一些在日本植物学会、日本植物解剖学会、日本古生物学会等会议上进行了初步报告。 1996年5月下旬，全体研究人员对日本北海道西北部小平川上游地区的上白垩纪沉积物进行了研究。在档案研究过程中，收集到了大量的木材化石，一些被子植物的花朵和果实，大量的针叶树的木材和球果化石，以及一些已灭绝的裸子植物的果实。所有这些化石都经过解剖学研究。在这项研究中，发现了两个来自塞诺曼阶（白垩纪晚期的最早时期）的被子植物木材标本。这是日本最古老的被子植物木材记录。 1996年12月，在日本植物学会年会（东北地区会议）上初步提出了这些木材的木结构。

项目成果

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, 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.,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)。