首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Systematic Revision of Trilobites from the Middle Ordovician (Darriwilian) Klimoli Formation of the Zhuozishan Area, Inner Mongolia, China
Authors:LEE Seung-Bae  LEE Dong-Chan  WOO Jusun and ZHANG Xingliang
Institution:1. Geology Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, Republic of Korea;2. Department of Earth Science Education, Chungbuk National University, Cheongju, Republic of Korea;3. Division of Polar Earth‐System Sciences, Korea Polar Research Institute, Incheon, Republic of Korea;4. Early Life Institute and State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069, China
Abstract:New morphologic information permits systematic revision of trilobites from the Middle Ordovician Klimoli Formation of the Zhuozishan area, Ordos Basin, Inner Mongolia. The new assemblage is composed of 10 species of the Raphiophoridae, Nileidae, Asaphidae, and Telephinidae. An asaphid, aff. Mioptychopyge lashachungensis (previously Paraptychopyge lashachungensis) displays an intermediate morphology between the Chinese nobiliasaphine genera Mioptychopyge and Zhenganites. The pygidial doublure is regarded as the most significant character to differentiate Symphysurus klimoliensis (previously Nileus klimoliensis) of the Nileidae from such closely allied taxa as Poronileus. A nileid, cf. Peraspis kujandensis displays typical nileid morphology, unlike the type species, Peraspis lineolata, which might turn out to be an asaphid. Ampyx gongwusuensis sp. nov. of the Raphiophoridae is the first record of the genus in the Zhuozishan area and reveals morphologic details that might be employed to resolve Ampyx taxonomy in China. Morphologic differences between A. gongwusuensis and Abulbaspis ordosensis might represent a case of sexual dimorphism.
Keywords:Invertebrate paleontology  Trilobita  systematics  Klimoli Formation  Darriwilian  Zhuozishan  Inner Mongolia
本文献已被 CNKI 等数据库收录!
点击此处可从《Acta Geologica Sinica》浏览原始摘要信息
点击此处可从《Acta Geologica Sinica》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号