检索结果-南通市图书馆

Internal Microanatomy and Zoological Affinity of the Early Cambrian Olivooides

Acta Geologica Sinica(English Edition) 2016年第1期90卷 38-65页

作者： Han Jian LI Guoxiang KUBOTA Shin OU Qiang TOSHINO Sho WANG Xing YANG Xiaoguang UESUGI Kentaro MASATO Hoshino SASAKI Osamu KANO Harumasa SATO Tomohiko KOMIYA Tsuyoshi Early Life Institute and Department of Geology and State Key Laboratory of Continental Dynamics Northwest University229 Taibai RoadXi'an 710069China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China Seto Marine Biological Laboratory Field Science Education and Research CenterKyoto UniversityShirahamaNishimuroWakayama 649-2211Japan Early Life Evolution Laboratory School of Earth Sciences and ResourcesChina.University of GeosciencesBeijing 100083China Graduate School of Fisheries Sciences Kitasato University1-15-1 KitasatoSagamiharaKanagawa 252-0373Japan Japan Synchrotron Radiation Research Institute(JASRI)1-1-1 Kouto Sayo-choSayo-gunHyogoJapan Tohoku University Museum Tohoku University6-3 AobaAramakiAoba-kuSendaiJapan Department of Earth Science and Astronomy Graduate School of Arts and SciencesThe University of TokyoTokyo 153-8902Japan

The early Cambrian pentamerous microfossil Olivooides/Punctatus in South China, which is characterized by a diagnostic stellate tubular apex, has been well-known for its almost complete development sequence that can be confidently traced from embryos and hatched juveniles, to conical adults. However, its zoological affinity remains highly controversial. Here we describe the internal microanatomic structures of the soft-body inside the peridermal theca of Olivooides multisulcatus Qian, 1977, including interradial pairs of tentacles, adradial and perradial frenula, perradial oral marginal lappets and twins of perradial gastric saccule-like humps as well as a circular velarium with striated coronal muscles. Particularly, one specimen shows bifurcated velarial canals along the bell aperture. Both the components of the soft-body and the external theca （or cyst） are arranged in perfect pentaradial symmetry. These characteristics are more compatible with those of living cubomedusans and co-occurring Cambrian athecate embryonic cubozoans. Concerning the presence of peridermal theca, Olivooides most likely represents an extinct thecate stem-group cubomedusae but devoid of both perradial eyes and specialized pedalia. The well-grown soft body inside the peridermal tube displays a set of mixed features of both polyp and medusa.

关键词： Embryos periderm cnidarians cubozoan early Cambrian Kuanchuanpu Formation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：