CELLULAR STRUCTURE OF PERMINERALIZED BENNETTITALEAN PETIOLE AND STEM NEWLY FOUND

新发现的全矿化贝内蒂塔叶柄和茎的细胞结构

• 批准号: 10640457
• 负责人: OHANA Tamiko
• 金额: $ 1.22万
• 依托单位: INSTITUTE 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: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10640457/
• 关键词: Bennetticarpus; Bennettitales; Hokkaido (Japan); Late Cretaceous; Upper Yezo Group; 球果目; Karaocarpon; ベネチテス目の分布; Cycadeoidea; 恐竜類の分布とその相関; 上部白亜系

Recently many plant-taxa have been described from the marine Upper Yezo Group (Coniacian-Santonian). These plant fossils are preserved as permineralized debris in calcareous nodules together with various marine animals. A single bennettitalean specimen was collected from the Upper Yezo Group. It consists of a receptacle, with numerous fertile (seminiferous) and sterile (interseminal) scales. Although the specimen is fragmented, its anatomical features are well preserved. This study provides a description of a new reproductive organ belonging to Bennettitales. As its affinity to Williamsoniaceae or Cycadeoidaceae and their allies is uncertain, we provisionally place our specimen in the form-genus Bennetticarpus and describe B. yezoites sp. nov.Comparison of Bennetticarpus yezoites with known bennettitalean taxa in other regions is given briefly.The present specimen is in association with various conifers, mainly with Taxodiaceae.

最近，许多植物分类群已被描述为来自海洋上耶佐组（Coniacian-Santonian）。这些植物化石与各种海洋动物一起作为过矿化碎屑保存在钙质结核中。一个单一的bennettitalean标本收集自上耶佐组。它由一个花托组成，有许多可育（生精）和不育（精间）的鳞片。虽然标本是破碎的，但其解剖特征保存完好。本研究描述了一个新的生殖器官，属于Bennettitales。由于它与Williamsoniaceae或苏铁科及其近缘种的亲缘关系尚不确定，我们暂时将我们的标本归为Bennetticarpus属，并描述了B。本文简要地介绍了本内蒂果属（Bennetticarpusyezoites）与其它地区已知的本内蒂果类（Bennettitaleans）的比较，本标本与多种针叶树，主要是杉科（Taxodiaceae）有关系。

项目成果

Ohana T.,Kimura T.and Chitaley S.: "Bennetticarpus yezoites sp.nov.(Bennettitales) from the Upper Cretaceous of Hokkaido, Japan"Paleontological Research. 2-2. 108-119 (1998)

Ohana T.、Kimura T.和 Chitaley S.：“来自日本北海道上白垩统的 Bennetticarpus yezoites sp.nov.（Bennettitales）”古生物学研究。

Ohana, T., Kimura, T. and Chitaley, S.: "Keraocarpon gen. nov., magnolialean fruits from the Upper Cretaceous of Hokkaido, Japan"Paleontological Research. 3-4. 294-302 (1999)

Ohana, T.、Kimura, T. 和 Chitaley, S.：“Keraocarpon gen. nov.，来自日本北海道上白垩纪的木兰果实”古生物学研究。

Ohana T.,Kimura T.and Chitaley S.: "Karaocarpon gen.nov.,magnolialean fruits from the Upper Cretaceous of Hokkaido, Japan"Paleontological Research. 3-4. 294-302 (1999)

Ohana T.、Kimura T.和 Chitaley S.：“Karaocarpon gen.nov.，来自日本北海道上白垩纪的木兰果”古生物学研究。

Ohana,T., Kimura,T. and Chitaley,S.: "Keraocarpon gen. nov., magnolialean fruits from the Upper Cretaceous of Hokkaido, Japan"Paleontological Research. vol.3,no.4. 294-302 (1999)

奥哈纳，T.，木村，T.

Ohana, T., Kimura, T.and Chitaley, S.: "Bennetticarpus yezoites sp.nov.(Bennettiales)from the Upper Cretaceous of Hokkaido, Japan." Paleontological Research. 2-2. 108-119 (1998)

Ohana, T.、Kimura, T. 和 Chitaley, S.：“来自日本北海道上白垩统的 Bennetticarpus yezoites sp.nov.（Bennettiales）”。