云南罗平大凹子与上石坎剖面牙形类动物群研究进展  

Advance Research of Conodont Fauna from Shangshikan and Daaozi Sections in Luoping Area,Yunnan Province

作　　者：黄金元[1] 张克信[2,3,4] 张启跃[1] 吕涛[1,2,3] 周长勇[1] 胡世学[1] 

机构地区：[1]成都地质矿产研究所,成都610081 [2]中国地质大学生物与环境地质国家重点实验室,武汉430074 [3]中国地质大学地球科学学院,武汉430074 [4]中国地质大学地质调查研究院,武汉430074

出　　处：《地质科技情报》2011年第3期1-17,共17页Geological Science and Technology Information

基　　金：中国地质调查局项目(1212010610211);国家自然科学基金项目(4092106240830212)

摘　　要：从大凹子剖面118件样品和上石坎剖面78件样品的系统研究中获得了丰富的牙形石标本,特征分子为Nicoraella kocke-li,Ni.germanicus,同时还获得了众多未能鉴定到种的片形分子Nicoraella sp.,Neospathodus sp.,以及大量的枝形分子,Cornudina?latidentata,Cornudina tortilis,Xaniognathus sp.,Hibbardella sp.,Cypridodella cf.delicatula,Cypridodella cf.conflexa,Enantiognathus ziegleri,Enantiognathus incurvus,Enantiognathus latus,Neohindeodella triassica,Hindeodella bogschi。对这些可识别到种级别的分子进行了鉴定描述。大凹子与上石坎剖面中获得的牙形石分子Nicoraella kockeli指示出罗平生物群的时代为Anisian期的Pelsonian亚期。Abundant conodont specimens are derived from systematic extraction of 78 samples of Shangshikan section and 118 samples of Daaozi section.The typical elements obtained are Nicoraella kockeli,Ni.germanicus,and some unidentifiable segment elements： Nicoraella sp.,Neospathodus sp..Also,plenty of ramiform elements are identified,such as Cornudina？ latidentata,Cornudina tortilis,Xaniognathus sp.,Hibbardella sp.,Cypridodella cf.delicatula,Cypridodella cf.conflexa,Enantiognathus ziegleri,Enantiognathus incurvus,Enantiognathus latus,Neohindeodella triassica,Hindeodella bogschi.All of them are described in detail.The conodont Nicoraella kockeli from Shangshikan and Daaozi sections implied that the Luoping biota is Pelsonian substage of Anisian in age.

关 键 词：大凹子剖面 上石坎剖面 牙形石 Pelsonian亚期 罗平生物群 

分 类 号：Q911.23[天文地球—古生物学与地层学]