Analysis for origin and phylogeny of the Ammonoidea based on comparative morphologic and antmical data

基于比较形态学和昆虫数据的菊总科的起源和系统发育分析

基本信息

批准号：
12440141
负责人：
TANABE Kazushige
金额：
$ 7.49万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12440141/
关键词：
Mollvsca Cephalopoda Ammonoidea Comparative anatomy Comparative embryology Systematics Evolution 比較交解剖学

项目摘要

1. Comparative atomical studyTanabe and Sasaki described the anatomical features of a phosphatised siphuncular tissue in a Permian ammonoid from Nevada (USA). This is a first reliable report of ammonoid soft tissue structures (Tanabe et al., 2000). Furthermore, Tanabe and Landman (2002) described the anatomical characteristics of the jaws of Cretaceous Ammonoidea based on well-preserved material from Hokkaido and US Western Interior Province.2. Comparative embryological studyTanabe and co-workers described the ornamentation on the embryonic and early postembryonic shells of exceptionally well preserved Carboniferous goniaitites from Nevada and discussed its implications for embryology and systematics (Tanabe et al., 2001).3. Systematic studyShigeta and co-workers suggested that the Ceratitina have their origin to the Permian Prolecanitida on the basis of comparative SEM observations of early internal shell features of material from Russia and US mid-continent (Shigeta et al., 2001). Tanabe and co-workers have examined the intra- and interspecific variation of early internal shell features of some Cretaceous ammonoids and revealed that the states for qualitative characters appear to be stable within each species, indicating that they can be utilized for higher-level phylogenetic systematics (Tanabe et al. in press).

1. 比较原子研究 Tanabe 和 Sasaki 描述了美国内华达州二叠纪菊石中磷酸化管状组织的解剖学特征。这是关于菊石软组织结构的第一份可靠报告（Tanabe 等，2000）。此外，Tanabe 和 Landman (2002) 根据北海道和美国西部内陆省保存完好的材料描述了白垩纪菊总科下颌的解剖学特征。2．比较胚胎学研究 Tanabe 及其同事描述了来自内华达州保存完好的石炭纪 goniaitites 的胚胎和早期胚胎后壳上的装饰，并讨论了其对胚胎学和系统学的影响（Tanabe 等人，2001）。3。系统研究 Shigeta 及其同事根据对俄罗斯和美国中部大陆物质早期内壳特征的比较 SEM 观察，认为 Ceratitina 起源于二叠纪 Prolecanitida（Shigeta 等，2001）。 Tanabe 和同事研究了一些白垩纪菊石早期内壳特征的种内和种间变异，并揭示了每个物种内定性特征的状态似乎是稳定的，这表明它们可用于更高层次的系统发育系统学（Tanabe 等人，待出版）。