Oryctocephalops和Ovatoryctocara在我国台江的发现及意义  

The Find and Significance of Oryctocephalops and Ovatoryctocara in Taijiang,China

作　　者：伍孟银[1] 彭进[1] 赵元龙[1] 

机构地区：[1]贵州工业大学资源环境学院古生物及生物成矿研究所,贵州贵阳550003

出　　处：《贵州工业大学学报（自然科学版）》2003年第3期6-10,共5页Journal of Guizhou University of Technology(Natural Science Edition)

基　　金：国家自然科学基金(40162002);攀登计划(95-专-1);贵州省重点基础基金;贵州省省长基金;贵州省科技基金;省委知工办等项目的资助

摘　　要：台江八郎、丹寨岩英等地的中-下寒武统凯里组下部地层中,发现了广泛分布于西伯利亚中寒武统下部的OryctocephalopsLermontova,1940和OvatoryctocaraTechernysheva1962.这一发现使Oryctocephalops及Ovatoryctocara分布的时代下限延伸至下寒武统顶部,分布范围扩大至亚洲南部;根据这一发现及原有Oryctocephalops和Ovatoryctocara的报导,推测该两属可能在早寒武世晚期起源于我国西南地区;它们的发现还使早寒武世亚太生物大区和西伯利亚过渡生物大区的差异减小,具有古生物学及古地理意义。Oryctocephalops Lermontova 1940 and Ovatoryctocara Techernysheva 1962 are found to exist exstensively in the lower part of the Middle and Low Cambrian in Balang,Taijiang and Yanying,Danzhai. The discovery extends the living era of Oryctocephalops Lermontova 1940 and Ovatoryctocara Techernysheva 1962 to the top of Low Cambrian,and expands their distribution to South Asia. Thus,the alleged difference between PacificAsia province and transitional province of Siberia is lessene d.The two genera must have originated from Southwest China. This is a significant event of Palaeontology and Palaeogeography.

关 键 词：Oryctocephalops Ovatoryctocara 中寒武统 下寒武统 中国 贵州台江 三叶虫 化石 地层剖面 西伯利亚 

分 类 号：Q915.819.1[天文地球—古生物学与地层学] Q915.641[生物学—古生物学]